|
|
|
| THE STUDY OF THE LOW-FREQUENCY SECTION IN THE NEAR-SURFACE MICRO-LOGGING RECORD OF THE TAHE OILFIELD |
| SONG Zhi-qiang, LIU Bin, CHEN Wu-jin, ZHANG Li-na |
| Sinopec Shengli Geophysical Company Co., Ltd., China Petroleum & Chemical Corporation, Dongying 257100, China |
|
|
|
|
Abstract There generally exists the record of a low-frequency band characterized by low frequency,strong energy and fat wave form in the near-surface micro-logging data of the Tahe oilfield,which usually occurs near the top of the high-velocity layer.The reason for the formation of this special low-frequency band and its influence on the selection of IP well depth are important problems that geologists have to face in seismic data acquisition in this area.The low-frequency band was previously considered to be produced by lithological change,and hence in well depth design,the low-frequency band was intentionally avoided.Based on practical data,theroretical analysis and well depth test,the authors hold that the low-frequency band results from ghosting,and that the IP in the low-frequency band will not change the single gun quality.The characteristics and the formation mechanism of the low-frequency band as well as its impact on the selection of IP well depth are analyzed in detail,and it is considered that the influence of the low-frequency band can be ignored in the IP well depth design.
|
|
Received: 15 April 2013
Published: 10 February 2014
|
|
|
|
|
|
| [1] |
CHEN Xiu-Juan, LIU Zhi-Di, LIU Yu-Xi, CHAI Hui-Qiang, WANG Yong. Research into the pore structure of tight reservoirs:A review[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 22-31. |
| [2] |
SHI Lei, GUAN Yao, FENG Jin, GAO Hui, QIU Xin-Wei, QUE Xiao-Ming. Multi-level division method of flow units for accurate permeability assessment of glutenite reservoirs:A case study of reservoir W53 of Paleogene Wenchang Formation in Lufeng oilfield[J]. Geophysical and Geochemical Exploration, 2022, 46(1): 78-86. |
|
|
|
|
