Results 31 to 40 of about 4,225,627 (203)

Wave velocity in shale in the Wufeng-Longmaxi formation in Sichuan Basin

Journal of Geophysics and Engineering, 2022
Abstract Analyzing the pattern of wave velocity is important for velocity prediction and amplitude-versus-offset analysis during unconventional seismic exploration. Several parameters, including the maturity and microstructure of organic matter (OM), the wave velocity, the mineral composition and the density of shale from Upper ...
Zichun Liu, Rong Peng, Xiangyang Li, Xiangdong Du, Zhenyu Zhu, Xin Li, Huafei Li   +6 more
openaire   +1 more source

Characteristics and formation stages of natural fractures in Lower Silurian Longmaxi Formation in Tiangongtang area of Sichuan Basin

Shiyou shiyan dizhi
The Lower Silurian Longmaxi Formation on the southwestern margin of the Sichuan Basin holds significant shale gas reserves. The characteristics and formation stages of fractures play a crucial role in shale gas accumulation and productivity.
Linhao LI, Cunhui FAN, Shengxian ZHAO, Shaojun LIU, Fei XU, Shan NIE, Yawei YU   +6 more
doaj   +2 more sources

Data for: Development of organic pores in the Longmaxi Formation overmature shales: Combined effects of thermal maturity and organic matter composition

, 2020
Table 1. Maturity, TOC and maceral of the Longmaxi Formation shales.Table 2. Structure parameters of organic pores in alginate and solid bitumen in Wells JY2 and YS118Table 3.
Zhiwei Liao (2835833), Liao, Zhiwei, Liao, Z (via Mendeley Data)   +2 more
core   +3 more sources

Experimental investigation of friction reducer effects on the microstructure and permeability of Longmaxi formation gas shale. [PDF]

Sci Rep
This study proposes a novel method to investigate the effects of friction reducers on the microstructure and permeability of gas shale, using the Longmaxi formation as a case study. By combining high-pressure mercury injection (HPMI) data, the pore size distributions (PSDs) and permeability of gas shale sample were derived from low-field nuclear ...
Liu Z, Zhang Y, Ma X, Man X, Tong X, Xie X, Wang Y, Ding Z, Pan Y, Zeng S.   +9 more
europepmc   +3 more sources

Shale pore characteristics and their impact on the gas-bearing properties of the Longmaxi Formation in the Luzhou area. [PDF]

Sci Rep
Abstract Deep shale has the characteristics of large burial depth, rapid changes in reservoir properties, complex pore types and structures, and unstable production. The whole-rock X-ray diffraction (XRD) analysis, reservoir physical property parameter testing, scanning electron microscopy (SEM) analysis, high ...
Li J, Li H, Jiang W, Cai M, He J, Wang Q, Li D.   +6 more
europepmc   +4 more sources

Molecular Structural Characteristics and 3D Model Reconstruction of Organic Matter in Longmaxi Formation Shale. [PDF]

ACS Omega
The establishment of molecular structure modeling is an important means to study the pore characteristics of shale organic matter and is significant for molecular-level simulations of gas storage and diffusion. Using 13C NMR, FTIR, and XPS combined with the split-peak fitting technique, the structural characteristics of the aromatic structure ...
Liu J, Shang F, Zhu Y, Li S, Feng G, Gao B.   +5 more
europepmc   +4 more sources

Geochemical characteristics and resource potential of shale gas in Sichuan Basin, China

Journal of Natural Gas Geoscience, 2021
Shale gas is a green, low-carbon and clean unconventional natural gas energy. China is rich in shale gas resources. Accelerating shale gas exploration and development is of great practical significance to improve China's energy structure and achieve the ...
Jian Li, Xiaobo Wang, Lianhua Hou, Chang Chen, Jianying Guo, Chunlong Yang, Yifeng Wang, Zhisheng Li, Huiying Cui, Aisheng Hao, Lu Zhang   +10 more
doaj   +1 more source

Organic Matter of the Wufeng–Longmaxi Formation Shales Using Scanning Electron Microscopy

Sustainability, 2023
Fine-grained organic matter (OM) particles are commonly widely dispersed in shale deposits. However, carrying out investigations of pores hosted by OM particles and the nature of grain interactions in OM particles and associated detrital grains using optical microscopy is difficult at best.
Jing Wang, Fawang Ye, Gary G. Lash, Zhaodong Xi   +3 more
openaire   +1 more source

Element Geochemical Characteristics and Their Geological Significance of Wufeng-Longmaxi Formation Shales in North Margin of the Central Guizhou Uplift

, 2021
In order to discuss depositional setting and its tectonic background of the Wufeng-Longmaxi Formation organic-rich shales in the northern margin of the central Guizhou uplift, the TOC content, trace elements and rare earth elements of the samples from ...
Wang, Y, Liu, T, Li, G, Gou, Q, Lan, B, Li, Q, Xu, S, Qiqi Li, Ting Liu, Gangquan Li, Qiyang Gou, Yuxuan Wang, Baofeng Lan, Shang Xu   +13 more
core   +1 more source

Geological difference and its significance of marine shale gases in South China

Petroleum Exploration and Development, 2016
Organic-rich marine shales are developed in both the Cambrian Qiongzhusi Formation and the Ordovician Wufeng Formation–Silurian Longmaxi Formation in South China, but are different in the drilling results of shale gas exploration.
Wenzhi ZHAO, Jianzhong LI, Tao YANG, Shufang WANG, Jinliang HUANG   +4 more
doaj   +1 more source