E3S Web Conf.
Volume 53, 20182018 3rd International Conference on Advances in Energy and Environment Research (ICAEER 2018)
|Number of page(s)||4|
|Section||Environment Engineering, Environmental Safety and Detection|
|Published online||14 September 2018|
Study on the Acoustic Characteristics of Rocks and Fracability in Wunan Oilfield
Research Institute of Drilling and Production technology in Qinghai Oilfield of China Petroleum
2 Southwest Petroleum University, school of oil and gas engineering, Chendu, 610500 Key research project “Key technology research for fine adjustment and enhanced oil recovery in old oil fields in Qaidam Basin” led by PetroChina Co Ltd.
* Corresponding author: Hu Yongquan, firstname.lastname@example.org
The acoustic characteristics under P&S wave velocity of 56 samples from Low Youshashan Formation in Wunan Oilfield were tested by SCMS-E high temperature and high pressure core multi parameter test instrument, the measured velocity ratio of P wave and S wave is 1.32-1.67 and the conversion between the P and S wave velocity of rock sample was established. The corresponding dynamic elastic modulus and Poisson's ratio were obtained on the base of the elastic wave propagation theory formula. So, according to the transformation relationship between static and dynamic mechanical parameters, rock brittleness index is calculated and average value is only equal to 38. Therefore, it is difficult to form a fully developed network model during the hydraulic fracturing. These achievements provide a guiding significance for fracturing development at Low Youshashan Formation in Wunan Oilfield.
© The Authors, published by EDP Sciences, 2018
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