Title:
METHOD AND DEVICE FOR RECOGNIZING THIEF ZONE IN OIL POOL
Document Type and Number:
WIPO Patent Application WO/2018/018865
Kind Code:
A1
Abstract:
A method and device for recognizing a thief zone in an oil pool. The method comprises: calculating a single reservoir stratum unit thickness output contribution value and a relative contribution coefficient of each reservoir stratum in oil pool production logging, the relative contribution coefficient being a ratio of the single reservoir stratum unit thickness output contribution value to the total reservoir stratum section unit thickness output; determining the smallest single reservoir stratum unit thickness output contribution value and the smallest relative contribution coefficient among the single reservoir stratum unit thickness output contribution values and the relative contribution coefficients in the oil pool production logging according to different oil pool features; calculating the single reservoir stratum unit thickness output contribution value and the relative contribution coefficient of each reservoir stratum of each well of the oil pool to be measured; and deciding whether a thief zone is developed in each reservoir stratum of each well according to the magnitude relationship between the single reservoir stratum unit thickness output contribution value and the smallest single reservoir stratum unit thickness output contribution value of each reservoir stratum of each well and the magnitude relationship between the relative contribution coefficient and the smallest relative contribution coefficient of each reservoir stratum of each well.
Inventors:
WEI CHENJI (CN)
LI YONG (CN)
LI BAOZHU (CN)
SONG BENBIAO (CN)
ZHANG QI (CN)
XIONG LIHUI (CN)
ZHENG JIE (CN)
ZHANG WEIMIN (CN)
ZHANG JING (CN)
WANG QI (CN)
LI YONG (CN)
LI BAOZHU (CN)
SONG BENBIAO (CN)
ZHANG QI (CN)
XIONG LIHUI (CN)
ZHENG JIE (CN)
ZHANG WEIMIN (CN)
ZHANG JING (CN)
WANG QI (CN)
Application Number:
PCT/CN2017/072146
Publication Date:
February 01, 2018
Filing Date:
January 23, 2017
Export Citation:
Assignee:
PETROCHINA CO LTD (CN)
International Classes:
E21B49/00
Foreign References:
| CN106121641A | 2016-11-16 | |||
| CN102146788A | 2011-08-10 | |||
| RU2286446C1 | 2006-10-27 | |||
| CN102953726A | 2013-03-06 | |||
| CN101096909A | 2008-01-02 |
Other References:
ZHANG, QI ET AL.: "Identification Methods and Development Strategy Study of Thief Zone in Reef-Bank Carbonate Reservoirs: A Case Study of the Mishrif Reservoir in Rumaila Oilfield", PETROLEUM GEOLOGY AND RECOVERY EFFICIENCY, vol. 23, no. 2, 15 December 2015 (2015-12-15), pages 29 - 34, ISSN: 1009-9603
Attorney, Agent or Firm:
BEIJING SANYOU INTELLECTUAL PROPERTY AGENCY LTD. (CN)
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