Results 71 to 80 of about 3,985,421 (167)

An Optimization Study of the Planning of Water Pollution Control for Majiagou Stream in Harbin, China

, 1989
A study on the optimization planning of water pollution control for Majiagou Stream in Harbin was carried out. Four water pollution control options were considered.
Wang Baozhen, Yang Gong, Qi Peishi, Sui Jun   +3 more
core   +1 more source

Experimental Study on the Acid Fracturing Fracture Propagation Law of a Fractured Carbonate Reservoir in the Majiagou Formation

Processes
Acid fracturing is a crucial method for reservoir reconstruction in carbonate reservoirs, and the propagation pattern of acid-etched fractures plays a key role in determining the scope of reservoir enhancement and post-fracturing productivity. However, large-scale physical simulations directly using acid solutions in fracturing experiments are limited,
Zhang, Yongchun, Kuang, Jianchao, Zhang, Hao, Zhong, Ying, Dong, Shijie   +4 more
openaire   +1 more source

Discovery of effective scale source rocks of the Ordovician Majiagou Fm in the Ordos Basin and its geological significance

, 2016
There have been different views on the origins of gas reservoirs of Ordovician Majiagou Fm in the Ordos Basin, but none of them supports the opinion that there are scale source rocks (TOC>0.5%) in the Majiagou Fm.
Jianqi Tu, Hongli Nan, Xuandong Fei, Chengjian Li, Wenbao Zhou, Yiguo Dong, Xiaomei Wang, Bin Zhang   +7 more
core   +1 more source

Characteristics and formation mechanism of stratified deformation of Lower Paleozoic faults in Gaojiapu area, eastern Ordos Basin

Shiyou shiyan dizhi
In recent years, exploration breakthroughs have been successively achieved in the strata deeper than the fifth member of the Lower Ordovician Majiagou Formation in the Ordos Basin, revealing its tremendous exploration potential.
Ping CHEN, Mingrui LI, Wei LI, Min QIANG, Pengcheng LU, Xiaowei YU, Wei HAN   +6 more
doaj   +1 more source

Genetic types of weathering-induced fractures in carbonate reservoirs in Fuxian area of Ordos Basin and their impact on hydrocarbon enrichment

Youqi dizhi yu caishoulu
The Lower Paleozoic carbonate rocks in the Ordos Basin are characterized by substantial depositional thickness and extensive distribution， with reservoirs exhibiting tight lithology， low porosity， and low permeability.
MAO Jinxin, HE Jianhua, XIE Xinhui, DENG Hucheng, WANG Xia, CAO Feng, XING Zimeng   +6 more
doaj   +1 more source

La Formation sur mesure dans les cégeps en 1986-1987 : état de la situation /

, 1988
La couv.
Québec (Province). Service de formation des adultes, Dubé, Gilles   +1 more
core   +1 more source

Transformation of the middle–upper ordovician sedimentary environment of the north China plate under the caledonian tectonic background: a case study of the ordovician majiagou formation in the qishan area

Frontiers in Earth Science
This study documents an abrupt sedimentary and petrographic transition near the top of the Ordovician Majiagou Formation in the Qishan area, southwestern Ordos Basin, North China Plate.
Di Zhao, Di Zhao, Xiang Wei, Rongxi Li, Bangsheng Zhao, Xiaoli Wu, Anquan Xia, Anquan Xia, Kaixin Feng   +8 more
doaj   +1 more source

Application of CNN and XGBoost machine learning models in TOC prediction of marine carbonate source rocks： A case study of Majiagou Formation， Ordos Basin

Youqi dizhi yu caishoulu
Traditional methods such as the ΔlogR method and multiple regression exhibit limitations in evaluating the total organic carbon （TOC） content of highly/over-mature marine carbonate source rocks.
QIAO Xin, ZHANG Fengqi, XU Wanglin, LIU Siyao, FENG Yansong, CHEN Hongguo, YUAN Xue   +6 more
doaj   +1 more source

Ordovician stratigraphy and sedimentary characteristics of Caojiagou section in Qishan County, southern margin of Ordos Basin

Youqicang pingjia yu kaifa, 2022
The Caojiagou section in Qishan County, Shaanxi Province is located in the southern margin of the Ordos Basin. The well-exposed section deposited complete Ordovician strata and developed various sedimentary types, and its location has convenient ...
CHEN Qiang, LI Wenhou, SUN Jiaopeng, ZHANG Qian, LIANG Jiwei, LI Zhichao   +5 more
doaj  

Time-Varying Reliability Analysis of the Majiagou Landslide

Rainfall and reservoir water level (RWL) fluctuations are the most important factors affecting reservoir landslide stability. Although extensive research has explored landslide stability under the combined effect of rainfall and RWL fluctuation ...
Heng Sun, Guangqing Hu, Chun Lan, Xiaojin Song, Hui Zhang   +4 more
core   +1 more source