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fracture 4

fracturing 4

hydraulic fracturing 4

microseismic monitoring 3

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horizontal well 2

low permeability 2

waterflood front 2

CBM(coal bed methane) 1

Fuling 1

H₂S formation 1

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A Review on Shale Gas Development in Fuling

Zhi-gang Wang

Frontiers of Engineering Management 2015, Volume 2, Issue 1, Pages 76-81 doi: 10.15302/J-FEM-2015011

Abstract: established a series of the core technologies, including horizontal well drilling with long laterals, stagedfracturing and completion technology, developed main fluids, tools and equipment, put forward “well

Keywords： Fuling shale gas drilling and completion staged fracturing learning curve capacity building commercial

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NO_x and H₂S formation in the reductive zone of air-staged combustion of

Jinzhi CAI, Dan LI, Denggao CHEN, Zhenshan LI

Frontiers in Energy 2021, Volume 15, Issue 1, Pages 4-13 doi: 10.1007/s11708-020-0804-y

Abstract: Low NO combustion of blended coals is widely used in coal-fired boilers in China to control NO emission; thus, it is necessary to understand the formation mechanism of NO and H S during the combustion of blended coals. This paper focused on the investigation of reductive gases in the formation of NO and H S in the reductive zone of blended coals during combustion. Experiments with Zhundong (ZD) and Commercial (GE) coal and their blends with different mixing ratios were conducted in a drop tube furnace at 1200°C–1400°C with an excessive air ratio of 0.6–1.2. The coal conversion and formation characteristics of CO, H S, and NO in the fuel-rich zone were carefully studied under different experimental conditions for different blend ratios. Blending ZD into GE was found to increase not only the coal conversion but also the concentrations of CO and H S as NO reduction accelerated. Both the CO and H S concentrations inblended coal combustion increase with an increase in the combustion temperature and a decrease in the excessive air ratio. Based on accumulated experimental data, one interesting finding was that NO and H S from blended coal combustion were almost directly dependent on the CO concentration, and the CO concentration of the blended coal combustion depended on the single char gasification conversion.Thus, CO, NO , and H S formation characteristics from blended coal combustion can be well predicted by single char gasification kinetics.

Keywords： blended coal combustion NO_xformation H₂S formation air staged combustion

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Experimental study on slurry-induced fracturing during shield tunneling

Teng WANG, Dajun YUAN, Dalong JIN, Xinggao LI

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 2, Pages 333-345 doi: 10.1007/s11709-021-0718-8

Abstract: Hydraulic fracturing may occur and cause a significant decrease in the support pressure if the slurryPreventing the occurrence of hydraulic fracturing in a slurry shield requires investigating the effectsof related influencing factors on the hydraulic fracturing pressure and fracture pattern.In this study, a hydraulic fracturing apparatus was developed to test the slurry-induced fracturing ofThe unconfined compressive strength of soil can reflect its ability to resist fracturing failure.

Keywords： slurry shield tunneling hydraulic fracturing test fracturing pressure fracture dip unconfined compressive

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The Prospect of Power Generation Technology Based on Coal Staged Conversion

Cen Kefa,Ni Mingjiang,Luo Zhongyang,Fang Mengxiang,Wang Qinhui,Wang Zhihua and Cen Jianmeng

Strategic Study of CAE 2015, Volume 17, Issue 9, Pages 118-122

Abstract: This paper introduces a new technology of coal conversion and utilization based on coal staged conversion

Keywords： staged conversion staged utilization energy conservation and emission reduction coal

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Hydraulic fracturing pressure of concentric double-layered cylinder in cohesive soil

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4, Pages 937-947 doi: 10.1007/s11709-021-0754-4

Abstract: First, an analytical solution for fracturing pressure in two different concentric regions of soil wasThen, several triaxial hydraulic fracturing tests were carried out to validate the analytical solutionFirst, there is a linear relationship between the fracturing pressure and confining pressure in concentricthe internal-layer soil is softer than the external-layer soil, the presence of internal soil on the fracturingMoreover, the influence of strength distinction between the two layers on the fracturing pressure is

Keywords： hydraulic fracturing pressure layered cavity expansion theory triaxial fracturing test cohesive soil

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Application of artificial fracturing for low permeable reservoir in Xianhe region

Xiao Shuming,Lv Zhiqiang,Guo Zhihua,Liu Xueqing

Strategic Study of CAE 2012, Volume 14, Issue 4, Pages 65-69

Abstract: the characteristics of low permeability and small porosity of high pressure low permeable reservoir, fracturingSince 2008, 79 fracturing mapping have been performed successfully in Xianhe region, which offers great

Keywords： fracturing mapping low permeability hydraulic fracturing

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Horizontal effects in fracturing operation of coal bed methane in Qinshui,Shanxi Province

Li Mengxi,Zhang Cong

Strategic Study of CAE 2012, Volume 14, Issue 4, Pages 16-19

Abstract:

This paper describes horizontal effects of CBM (coal bed methane)fracturingfractures have adverse effects, including reduced production flow rate, depletion, and watering during fracturingThis discovery shows that the horizontal compression of fracturing could have adverse impact on productionof adjacent wells, and fracturing designer should be aware of it.

Keywords： coal bed methane fracture hydraulic fracturing

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Long-term behavior and safety assessment of Sance Rockfill Dam

Marta DOLEZALOVA, Ivo HLADIK

Frontiers of Structural and Civil Engineering 2011, Volume 5, Issue 1, Pages 79-89 doi: 10.1007/s11709-010-0010-9

Abstract: of the dam including slope stability analysis and estimation of the clay core cracking and hydraulic fracturing

Keywords： rockfill dam path dependence creep calibration cracking hydraulic fracturing hazard

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Microseismic fracturing mapping and fracturing of open-hole long horizontal Well Su 75-70-6H

Wang Wanxun,Ye Lianchi,Wang Lizhi,Duan Zhengzhong

Strategic Study of CAE 2012, Volume 14, Issue 4, Pages 4-7

Abstract:

Well Su 75-70-6H is the largest open hole horizontal well fracturingwhether fractures are generated, locations and patterns of fractures, and further provides a guide for fracturingoperations; monitoring can also identify location of possible fracturing fluid leakage, provide earlyIt proves that domestic manufactured fracturing downhole tools can be used.The result of microseismic

Keywords： fracturing microseismic monitoring fracture

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Monitoring and Analyzing on Fracturing Fracture from Horizontal Well

Liu Jianzhong,Zhang Chuanxu,Zhao Yanbo,Jiang Yushuang,Song Jianxing

Strategic Study of CAE 2008, Volume 10, Issue 4, Pages 60-64

Abstract: The microseism monitoring of man-made fracture can understand the shape and orientation of fracturing

Keywords： horizontal well fracturing fracture microseism monitor

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Stress distribution in third subsidence belt

Yan Zhitao,Liu Jianzhong,Qiu Jinping,Jin Lihua

Strategic Study of CAE 2009, Volume 11, Issue 2, Pages 33-35

Abstract: presented , with great amounts of data on hydraulic fracture orientation obtained from monitoring hydraulic fracturing

Keywords： hydraulic fracturing monitoring with micro- seismics third subsidence belt direction of maximumprinciplestress hydraulic fracturing treatment

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A case study of oriented perforating technology for the multiple crack fracturing

Tang Meirong

Strategic Study of CAE 2012, Volume 14, Issue 4, Pages 105-112

Abstract: text-align: justify;">It has been proved by successful experimental study and application of the new fracturingdevelopment the oil through the general methods due to geological condition, watering well distribution and fracturingVolume fracturing is proposed to increase the productivity by multiple crack fracturing since 2006 inThe oriented perforating technology for the multiple crack fracturing is presented and applied in theproductivity also increased 38.1 % compared to the adjacent by oriented perforating and multiple crack fracturing

Keywords： oriented perforating fractural diverting multiple crack fracturing discharge volume increase in production

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Barehole horizontal well fracturing technology and application for low permeable reservoir

Pan Yubing

Strategic Study of CAE 2012, Volume 14, Issue 4, Pages 70-73

Abstract: What's more, we also combine drilling tures with the oil expansion packer process to carry out fracturingBesides, using open-hole horizontal reservoir fracturing improvement can increase daily oil production

Keywords： low permeability horizontal well open hole completion fracturing

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Shale reservoir network fracturing technology research and experiment

Jia Changgui,Li Shuangming,Wang Haitao, Jiang Tingxue

Strategic Study of CAE 2012, Volume 14, Issue 6, Pages 106-112

Abstract:

Shale reservoir fracturing is the critical and center technology forDifferent from conventional low permeability oil and gas reservoir whose goal is to improve fracturingProposed the concept of network effective fracturing stimulation volume of shale ( ESRV ), in referenceto North American shale gas fracturing experience and the domestic shale gas fracturing based on practice, network fracturing methods, flowback technology and other aspects.

Keywords： shale reservoir network fracturing

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Computational methods for fracture in rock: a review and recent advances

Ali JENABIDEHKORDI

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 2, Pages 273-287 doi: 10.1007/s11709-018-0459-5

Abstract: We present an overview of the most popular state-of-the-art computational methods available for modelling fracture in rock. The summarized numerical methods can be classified into three categories: Continuum Based Methods, Discrete Crack Approaches, and Block-Based Methods. We will not only provide an extensive review of those methods which can be found elsewhere but particularly address their potential in modelling fracture in rock mechanics and geotechnical engineering. In this context, we will discuss their key applications, assumptions, and limitations. Furthermore, we also address ‘general’ difficulties that may arise for simulating fracture in rock and fractured rock. This review will conclude with some final remarks and future challenges.

Keywords： numerical modelling method development rock mechanics fractured rock rock fracturing