Application of 3D seismic attributes to optimize the placement of horizontal wells within a tight gas sand reservoir, Ordos Basin, China

被引：17

作者：

Wang, Zhiguo ^{[1
]}

Gao, Jinghuai ^{[1
]}

Lei, Xiaolan ^{[2
]}

Cui, Xiaojie ^{[3
]}

Wang, Daxing ^{[3
]}

机构：

[1] Xi An Jiao Tong Univ, Dept Computat Geophys, Natl Engn Lab Offshore Oil Explorat, Xian, Peoples R China

[2] Changqing Oilfield Co, Gas Prod Plant 2, Xian, Peoples R China

[3] Changqing Oilfield Co, Res Inst Explorat & Dev, Xian, Peoples R China

来源：

GEOPHYSICS | 2016年 / 81卷 / 03期

基金：

中国国家自然科学基金;

关键词：

GENERALIZED MORSE WAVELETS; INSTANTANEOUS FREQUENCY; EXTRACTION; FIELD;

D O I：

10.1190/GEO2015-0244.1

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

The Lower Permian Xiashihezi Formation in the Ordos Basin, China, is a quartz-sandstone reservoir with low porosity and low permeability. We have acquired 3D seismic data and well data from 18 vertical and four horizontal wells to indicate the potential of seismic attribute analyses in locating seismic sweet spots for lateral placement of horizontal wells. Using the analytic wavelet transform with a Morse wavelet, the integration of high tuning spectral components, high sweetness and high spectral attenuation helped us to estimate the distribution of gas-bearing tight sands in the Xiashihezi Formation. Our results revealed that the principal target of horizontal drilling and production was gas-bearing massive point bars in the braided river delta setting of the Ordos Basin. The integrated workflow of the seismic attribute analysis contributes to the optimal horizontal well planning by mining and exposing critical geological information of a tight gas sand reservoir from within 3D seismic data.

引用

页码：B77 / B86

页数：10