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Akademický článek

Drawdown Pressure Model of Low Porosity and Permeability Matrix Sandstone Gas Reservoir Test with Multi-Factor Restrictions

Autor: QIU Kang

Publikováno v: Shanghai Jiaotong Daxue xuebao, Vol 57, Iss S1, Pp 30-36 (2023)

When selecting the drawdown pressure during drill stem test (DST), it is generally necessary to consider various factors such as downhole safety, pipe string safety, construction efficiency, etc. For low porosity and permeability matrix sandstone for

Externí odkaz: https://doaj.org/article/d2b47eda2b8d41b186ceb50cf6197ce9

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A Dataset with Multibeam Forward-Looking Sonar for Underwater Object Detection

Autor: Xie, Kaibing, Yang, Jian, Qiu, Kang

Multibeam forward-looking sonar (MFLS) plays an important role in underwater detection. There are several challenges to the research on underwater object detection with MFLS. Firstly, the research is lack of available dataset. Secondly, the sonar ima

Externí odkaz: http://arxiv.org/abs/2212.00352

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Akademický článek

An environment friendly drilling fluid system

Autor: Xie Shuixiang, Jiang Guancheng, Chen Mian, Deng Hao, Liu Guangquan, Xu Yu, Wang Jianhua, Qiu Kang

Publikováno v: Petroleum Exploration and Development, Vol 38, Iss 3, Pp 369-378 (2011)

Based on numerous laboratory studies, an environment friendly drilling fluid system is developed. The formula is 4% bentonite+0.3%IND-30+1.5%NAT-20+3%FXJS+2%NFT-25. By adopting environment friendly additives, the system has good temperature resistanc

Externí odkaz: https://doaj.org/article/1eed5c59639f440084b20a6a39edb3b7

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