A Systematic Experimental Study of Acid Fracture Conductivity

1996 ◽  
Author(s):  
Mirza S. Beg ◽  
A. Oguz Kunak ◽  
Ming Gong ◽  
Ding Zhu ◽  
A. Daniel Hill
Keyword(s):  
Experimental Study ◽  
Fracture Conductivity

A Systematic Experimental Study of Acid Fracture Conductivity

1998 ◽  
Vol 13 (04) ◽  
pp. 267-271 ◽  
Author(s):  
M.S. Beg ◽  
A.O. Kunak ◽  
Ming Gong ◽  
Ding Zhu ◽  
A.D. Hill
Keyword(s):  
Experimental Study ◽  
Fracture Conductivity

The Origins of Low-Fracture Conductivity in Soft Shale Formations: An Experimental Study

2015 ◽  
Vol 3 (12) ◽  
pp. 1233-1242 ◽  
Author(s):  
Yushi Zou ◽  
Xinfang Ma ◽  
Shicheng Zhang ◽  
Tong Zhou ◽  
Christine Ehlig-Economides ◽  
...  
Keyword(s):  
Experimental Study ◽  
Fracture Conductivity ◽  
Shale Formations

An Experimental Study on Fracture Conductivity Influenced by Sulfur Deposition

2013 ◽  
Vol 423-426 ◽  
pp. 644-648
Author(s):  
Ying Kun Fu ◽  
Zhi Ping Li ◽  
Feng Peng Lai ◽  
Bao Song Yang ◽  
Chao Meng
Keyword(s):  
Experimental Study ◽  
Hydrochloric Acid ◽  
Hydraulic Fracturing ◽  
Elemental Sulfur ◽  
Sulfur Deposition ◽  
Severe Damage ◽  
Gas Reservoirs ◽  
Fracture Conductivity ◽  
Sulfur Powder ◽  
Sour Gas

Deposition of solid elemental sulfur may arouse severe damage to the formation and significantly affect the gas deliverability in sour gas reservoirs. As one main measure of stimulation, hydraulic fracturing always ceases to work due to the sulfur deposition in the fractures. To have a better understanding of the failure of fracture conductivity caused by sulfur deposition and learn the degree of fracture conductivity improved by acidification, an experimental was implemented and studied. In this paper, both the sulfur powder and an artificial fractured core were employed to simulate the process of sulfur deposition in the fractures. A further step was made to inject some hydrochloric acid into the blocked fracture caused by sulfur powder. The result showed that the fracture conductivity could be greatly reduced by the sulfur deposition. The fracture conductivity can be decreased by 17%~47% due to sulfur deposition. However, to some degree, acid-fracturing can improve the conductivity of fracture by eroding the surface of fracture. This means the failure of fracture blocked by sulfur deposition can be improved by acidification.

Experimental Study of Fracture Conductivity for Water-Fracturing and Conventional Fracturing Applications

SPE Journal ◽  
2001 ◽  
Vol 6 (03) ◽  
pp. 288-298 ◽  
Author(s):  
C.N. Fredd ◽  
S.B. McConnell ◽  
C.L. Boney ◽  
K.W. England
Keyword(s):  
Experimental Study ◽  
Fracture Conductivity

scholarly journals Experimental study on proppant embedment depth and fracture conductivity in coal seam

2019 ◽  
Vol 330 ◽  
pp. 032026
Author(s):  
Zixi Guo ◽  
Huaibin Zhen ◽  
Dong Chen ◽  
Bin Sun ◽  
Xiaoya Chen ◽  
...  
Keyword(s):  
Experimental Study ◽  
Coal Seam ◽  
Embedment Depth ◽  
Fracture Conductivity ◽  
Proppant Embedment

Experimental study and modeling of final fracture conductivity during acid fracturing

2021 ◽  
pp. 109192
Author(s):  
Hossein Mehrjoo ◽  
Saeid Norouzi-Apourvari ◽  
Hossein Jalalifar ◽  
Mostafa Shajari
Keyword(s):  
Experimental Study ◽  
Fracture Conductivity ◽  
Acid Fracturing ◽  
Final Fracture

Experimental study on the restoration from a tilt-azimuth series for improvement in resolution

1995 ◽  
Vol 53 ◽  
pp. 636-637
Author(s):  
Norio Baba ◽  
Norihiko Ichise ◽  
Syunya Watanabe
Keyword(s):  
Experimental Study ◽  
Spherical Aberration ◽  
Incident Beam ◽  
Optical Parameters ◽  
Beam Tilting ◽  
Illumination Method ◽  
Restoration Method ◽  
Illumination Mode

The tilted beam illumination method is used to improve the resolution comparing with the axial illumination mode. Using this advantage, a restoration method of several tilted beam images covering the full azimuthal range was proposed by Saxton, and experimentally examined. To make this technique more reliable it seems that some practical problems still remain. In this report the restoration was attempted and the problems were considered. In our study, four problems were pointed out for the experiment of the restoration. (1) Accurate beam tilt adjustment to fit the incident beam to the coma-free axis for the symmetrical beam tilting over the full azimuthal range. (2) Accurate measurements of the optical parameters which are necessary to design the restoration filter. Even if the spherical aberration coefficient Cs is known with accuracy and the axial astigmatism is sufficiently compensated, at least the defocus value must be measured. (3) Accurate alignment of the tilt-azimuth series images.

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