|
|
|
| The application of temperature logging to the gas hydrate resource exploration in permafrost areas of Northeast China |
| QIU Li-Quan1, 2, 3, LIU Dong-Ming1, 2, 3, KONG Guang-Sheng1, 2, 3, LI Yang1, 2, 3, FENG Jie1, 2, 3, LIN Zhen-Zhou1, 2, 3, JIA Ding-Yu1, 2, 3, OU Yang1, 2, 3 |
1.Electromagnetic Detection Technology Key Laboratory of the Ministry of Land and Resources,Langfang 065000,China;
2.National Modern Geological Exploration Technology Research Center,Langfang 065000,China;
3.Institute of Geophysical and Geochemical Exploration,CAGS,Langfang 065000,China |
|
|
|
|
Abstract The thickness of permafrost is an important factor for the formation and distribution of gas hydrate in permafrost areas.Recognizing permafrost thickness accurately is significant for gas hydrate resource exploration in permafrost areas of Northeast China.Based on the characteristics of permafrost from temperature logging,the authors established the geothermal temperature model and carried out research on temperature logging data from the nine gas hydrate exploration holes.Some conclusions have been reached:(1) The temperature logging curve has an obvious inflection point at the bottom floor.The slope of the temperature logging curve above the inflection point is less than that under the inflection point.Using the temperature logging data can accurately recognize the permafrost bottom floor.(2) Too short hole over-flow water and drilling fluid equilibrium time can influence the accuracy of temperature logging data.The length of sunshine duration influences the development depth of permafrost.
|
|
Received: 08 September 2017
Published: 20 December 2017
|
|
|
|
|
|
| [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. |
|
|
|
|
