Experimental Research on Proppant Transport Performance of GRF-CO2 Fracturing Fluid

2013 ◽  
Vol 807-809 ◽  
pp. 2583-2588 ◽  
Author(s):  
Xiang Rong Luo ◽  
Shu Zhong Wang ◽  
Xiao Sun ◽  
Xiao Juan Ren
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Large Scale ◽  
Settling Velocity ◽  
Test System ◽  
Average Error ◽  
Fracturing Fluid ◽  
Proppant Transport ◽  
Fluid Test

In this article, the experimental study on proppant transport performance of GRF-CO2 system is performed by using the large-scale foam fracturing fluid test system of high temperature and high pressure, and critical settling velocity and proppant settling velocity are obtained.Research results show that the critical settling velocity increases with the temperature rising, in foaming cases,decreases with the foam quality and sand ratio rising.The correlations for GRF-CO2 fracturing final proppant settling velocity within solution and the critical settling velocity have been obtained, all kinds of average error is less than 14%.

Experimental Study on the Electrical Conductivity of Pyroxene Andesite at High Temperature and High Pressure

2016 ◽  
Vol 174 (3) ◽  
pp. 1033-1041 ◽  
Author(s):  
KeShi Hui ◽  
LiDong Dai ◽  
HePing Li ◽  
HaiYing Hu ◽  
JianJun Jiang ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Pyroxene Andesite

Experimental Study to Estimate CO2 Solubility in a High Pressure High Temperature HPHT Reservoir Carbonate Aquifer

2019 ◽  
Author(s):  
Mohd Fakrumie Zaidin ◽  
Budi Priyatna Kantaatmadja ◽  
Antonin Chapoy ◽  
Pehzman Ahmadi ◽  
Rod Burgass
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Carbonate Aquifer ◽  
High Pressure High Temperature

Study of Degradable Fibers with and without Guar Gum as a Proppant Transport Agent Using Large-Scale Slot Equipment

SPE Journal ◽  
2020 ◽  
pp. 1-19
Author(s):  
Jung Yong Kim ◽  
Lijun Zhou ◽  
Nobuo Morita
Keyword(s):  
Experimental Study ◽  
North America ◽  
Hydraulic Fracturing ◽  
Large Scale ◽  
Guar Gum ◽  
Proppant Transport ◽  
Transport Agent ◽  
Unconventional Resources ◽  
Fracture Fluid ◽  
Transport Experiment

Summary Hydraulic fracturing with slickwater is a common practice in developing unconventional resources in North America. The proppant placement in the fractures largely determines the productivity of the well because it affects the conductivity of fractures. Despite the wide use of slickwater fracturing and the importance of proppant placement, the proppant transport is still not fully understood, and the efficiency of the proppant placement is mostly bound to the changes to proppant properties, friction reducers, and guar technology. Although the degradable fiber is currently used in some cases, it has not been well investigated. In this experimental study, we conducted a proppant transport experiment using different fluid compositions of fiber and guar gum in three types of proppant transport slot equipment. After the experiments, simulation was conducted with the commercial fracture software StimPlanTM (NSI Technologies 2020) to simulate and compare the fracture fluid performance with and without the fibers. The results indicate that using degradable fibers with or without the guar gum as a viscosifier can produce a fracture slurry applicable in both conventional and unconventional fracturing operations, helping proppant placement in the reservoir.

Tests on High-Pressure Water Rotational Jetting Ventilation Cooling Characteristic

2012 ◽  
Vol 594-597 ◽  
pp. 2073-2076
Author(s):  
Zhong Fei Ma ◽  
Li Chen ◽  
Fu Qin Wang
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Cooling Rate ◽  
Temperature Difference ◽  
Water Pressure ◽  
Obvious Effect ◽  
Guide Vanes ◽  
Parabolic Growth ◽  
Pressure Water

In order to improve the cooling effect and practical applicability of falling temperature technique on high-temperature workplaces, the aeration and cooling principle of the high pressure water rotational jetting ventilation were analysed, and the experimental study was carried out. The results show that water pressure and cooling rate are an approximation of parabolic growth relationship, different structure of jet tube and temperature difference on water and gas also have an obvious effect on the cooling amplitude and air quantity. the guide vanes installed may improve effect of ventilation and cooling the capacity on high pressure water rotational jetting.

Stress-induced melting of plagioclase during laboratory earthquakes

2020 ◽  
Author(s):  
Sarah Incel
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Acoustic Emissions ◽  
The Other ◽  
Chemical Analyses ◽  
Quartz Crystals ◽  
Maximum Compression ◽  
High Pressure High Temperature ◽  
Two Samples

<p>Impact rocks often reveal particular structures, e.g. shock-induced amorphization and melting of crystals, that formed due to high stresses during shock metamorphism. This experimental study presents four granulite samples that were deformed in a D-DIA apparatus at 2.5 GPa and 3 GPa and at either 1023 K, 1173 K, or at 995 to 1225 K. During deformation of two samples (2.5 GPa and either 995-1125 K or 1173 K) 82 and 794 acoustic emissions (AEs) were recorded, respectively, whereas less than 10 AEs were recorded while deforming the other two granulite sample (3 GPa and 995-1225 K; 2.5 and 1073 K). Microstructures of the samples that emitted 82 and 794 AEs reveal amorphous patches that are absent in the samples corresponding to the runs in which <10 AEs were recorded, indicating a link between AE-activity and amorphization of plagioclase. The contacts between amorphous patches and host-plagioclase crystals are very sharp and amorphization predominantly occurred along two distinct planes inclined at approx. 45° towards the direction of maximum compression. Surrounding the patches, the hosts show extensive fragmentation. Chemical analyses of the amorphous patches demonstrate an enrichment in potassium and silicon relative to the initial plagioclase chemistry and the growth of euhedral quartz crystals within the patches. Such microstructures were previously found in naturally or experimentally shocked rocks and interpreted as shock melts. The occurrence of structures, revealing striking similarities to shock melts, in experimental samples that underwent embrittlement at high-pressure, high-temperature conditions below the sample’s solidus (~1377 K) suggests melting due to elevated transient stresses, e.g. during rupture processes.</p>

Experimental study of the metamorphic reaction involving melt under high temperature and high pressure

1998 ◽  
Vol 43 (3) ◽  
pp. 249-253
Author(s):  
Fulai Liu ◽  
Qihan Shen ◽  
Yuansheng Geng ◽  
Xuechun Xu ◽  
Rui Ma
Keyword(s):  
Experimental Study ◽  
High Pressure ◽  
High Temperature ◽  
Metamorphic Reaction
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