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Damage by Swelling Clay and Experimental Study of Cyclic Foam Stimulation
Author(s) -
ZHANG Jiaming,
WU Xiaodong,
HAN Guoqing,
ZHANG Kai,
WANG Jingyao,
ZHANG Jia,
WANG Bo,
CHEN Zhangxing
Publication year - 2015
Publication title -
acta geologica sinica ‐ english edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.444
H-Index - 61
eISSN - 1755-6724
pISSN - 1000-9515
DOI - 10.1111/1755-6724.12303_27
Subject(s) - swelling , materials science , composite material , stimulation , psychology , neuroscience
permeability decreasing, skin factor increasing and productivity index decreasing. Generally, formation damage is not reversible. This phenomenon is known as reverse funnel effect (Porter 1989). People have been trying to find effective ways to remedy the reservoir damage. Stimulation and hydraulic fracture are traditional way to fix formation damage. However, they all have inevitable limitations. The stimulation fluid is acid usually, which will cause equipment/tubing corrosion, second formation damage and environmental pollution. These problems limit the application of them. And they are not suitable for horizontal well as the gravity, especially for stimulation (Xu and Pu 2013). Bond and Holbrook take foam into the field of oil recovery (Friedmann, Chen, and Gauglitz 1991; Boud and Holbrook 1958; Aarra, Skauge, and Martinsen 2002; Castanier 1989; Zhdanov et al. 1996). Foamed cement plays an important role in preventing and controlling the shallow water flow in deepwater drilling effectively (Zhang et al. 2011). Foam is also important for fracturing and acidizing of low permeability, low pressure or strong water-sensitive reservoirs (Zheng et al. 2011; Xu et al. 2002). These applications all show the important role of foam in oil and gas industry. Recently, we take foam as a stimulation fluid to remedy the formation damage which is caused by clay swelling. However, nitrogen foam is a complicated system and is a structured fluid. The bubbles with different sizes separated by the lamellae form the foam fluid with special structure. Under the shearing action, the foam could deform, collapse, coalesce, and regenerate, which eventually leads to the complexity of foam transporting and blocking in porous media. Therefore, we choose experiment method to study the stimulation process. In this paper, reservoir damage caused by clay is due to ZHANG Jiaming, WU Xiaodong, HAN Guoqing, ZHANG Kai, WANG Jingyao, ZHANG Jia, WANG Bo and CHEN Zhangxing, 2015. Damage by Swelling Clay and Experimental Study of Cyclic Foam Stimulation. Acta Geologica Sinica (English Edition), 89(supp.): 215 -216.