A Utility Mode Surface Cross-linked Acid System to Improve the BeachBar Sand Low-permeability Development Effects

西南石油大学学报(自然科学版) ›› 2013, Vol. 35 ›› Issue (2): 146-151.

• 石油与天然气工程 • Previous Articles Next Articles

A Utility Mode Surface Cross-linked Acid System to Improve the BeachBar Sand Low-permeability Development Effects

Wen Changyun1, Wang Lei2, Ma Shou2, Huang Bo2

1. School of Resources and Environment Engineering，Southwest Petroleum University，Chengdu，Sichuan 610500，China2. Production Technology Research Academy，Shengli Oilfield，SINOPEC，Dongying，Shandong 257010，China

Received:1900-01-01 Revised:1900-01-01 Online:2013-04-01 Published:2013-04-01

Abstract

Abstract: Aiming at beach-bar reservoirs with low permeability，large-scale reserves，poor properties，severe heterogeneity，
large differences between layers，a new ground crosslinked acid system is developed. By indoor crosslinking and gel breaking
test，a low cost of thickening agent and crosslinking agent are screened out which can crosslink under strong acidic conditions，
and are used to form the crosslinked acid. Through gel formed and broken tests under room temperature，the best crosslinked
ratio and polymer viscosity are determined indoor. Then，additives are used to form the cross linked acid system. Through
such tests as gel formed and broken，corrosion，cleanup，temperature，some advantages of the new system are shown with high
viscosity，low filtration，low acid-rock reaction speed，and greater transformation radius，which is applied on well Bin-10X1，
and has achieved good stimulation effectis.

Key words: beach and bar sand, low permeability reservoir, cross-linked acid, gelling agent, crosslinker

Wen Changyun;Wang Lei;Ma Shou;Huang Bo. A Utility Mode Surface Cross-linked Acid System to Improve the BeachBar Sand Low-permeability Development Effects[J]. 西南石油大学学报(自然科学版), 2013, 35(2): 146-151.

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A Utility Mode Surface Cross-linked Acid System to Improve the BeachBar Sand Low-permeability Development Effects

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