Title:
METHOD AND DEVICE FOR DETERMINING DISSOLUTION DEGREE OF KARST RESERVOIR
Document Type and Number:
WIPO Patent Application WO/2017/114443
Kind Code:
A1
Abstract:
The invention relates to the technical field of well logging interpretation. Provided is a method for determining a dissolution degree of a karst reservoir comprising: extracting, from electrical imaging logging image data associated with a target karst reservoir, a vertical dissolution fracture characteristic and a horizontal dissolution fracture characteristic, and calculating a well logging characteristic parameter; determining, according to the vertical dissolution fracture characteristic, the horizontal dissolution fracture characteristic and the well logging characteristic parameter, a karst zone containing the target karst reservoir, and classifying a dissolution degree of the karst zone; and determining, according to the karst zone and the dissolution degree thereof, a dissolution degree of a viable storage section of the target karst reservoir. Also provided is a device for determining a dissolution degree of a karst reservoir. The method and device of the invention classifies a dissolution degree of the target karst reservoir according to a vertical dissolution fracture characteristic and a horizontal dissolution fracture characteristic extracted from electrical imaging logging image data and a well logging characteristic parameter, thereby quickly and instinctively identifying a karst zone containing the karst reservoir, classifying a dissolution degree of the karst zone, and obtaining a determination result consistent with that of a core. The invention provides important technical support for exploration and development of an oil-gas field.
Inventors:
LI NING (CN)
WU HONGLIANG (CN)
FENG ZHOU (CN)
FENG QINGFU (CN)
WANG KEWEN (CN)
ZHANG XIAOTAO (CN)
ZHANG GONG (CN)
WU HONGLIANG (CN)
FENG ZHOU (CN)
FENG QINGFU (CN)
WANG KEWEN (CN)
ZHANG XIAOTAO (CN)
ZHANG GONG (CN)
Application Number:
PCT/CN2016/112856
Publication Date:
July 06, 2017
Filing Date:
December 29, 2016
Export Citation:
Assignee:
PETROCHINA CO LTD (CN)
International Classes:
E21B49/00; G01V1/40
Foreign References:
| CN105626058A | 2016-06-01 | |||
| CN102042010A | 2011-05-04 | |||
| CN103529475A | 2014-01-22 | |||
| CN104806212A | 2015-07-29 | |||
| CN102373923A | 2012-03-14 | |||
| CN101892837A | 2010-11-24 | |||
| US20100084131A1 | 2010-04-08 |
Other References:
See also references of EP 3399143A4
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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