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DFIT을 이용한 저류층의 투과도 및 초기압력 추정에 관한 연구

Title
DFIT을 이용한 저류층의 투과도 및 초기압력 추정에 관한 연구
Author
이근상
Keywords
셰일가스; 투과도; 초기압력; DFIT(diagnostic fracture injection test); Mini frac test; Shale gas; Permeability; nitial pressure; DFIT
Issue Date
2013-03
Publisher
한국암반공학회
Citation
한국암반공학회 학술대회, 2013, P.21-24(4)
Abstract
Well testing in unconventional reservoirs, such as tight or shale gas formations, presents considerable challenges. It is difficult to estimate the reservoir properties in ultra-low permeability formation because of poor inflow prior to stimulation and excessive test duration. Moreover, radial flow may not develop in hydraulically fractured horizontal wells. For these reasons, the cost of test is high and the accuracy is relatively low. Accordingly, industry is turning to an alternate testing method, diagnostic fracture injection test (DFIT), which is conducted prior to the main hydraulic fracture treatments. Nowadays, DFIT are regarded as the most practical way to obtain good estimates of reservoir properties in unconventional reservoirs. Various methods may be used for interpreting DFIT data. This paper gives an explanation of those methods in detail and examines three actual field data. These show how various analysis methods can be applied to consistently interpret fracture closure pressure and time, as well as before and after closure flow regimes and reservoir properties from field data.
URI
http://www.dbpia.co.kr/Journal/ArticleDetail/NODE02128670http://hdl.handle.net/20.500.11754/52122
ISSN
1225-1275
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > EARTH RESOURCES AND ENVIRONMENTAL ENGINEERING(자원환경공학과) > Articles
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