Laboratory-scale fracture conductivity created by acid etching

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dc.contributor.advisor Hill , A . Daniel en_US
dc.contributor.committeeMember Cheng , Zhengdong en_US
dc.creator Pournik , Maysam en_US 2010 -01 -15T00 :02 :53Z 2014 -02 -19T19 :31 :17Z 2010 -01 -15T00 :02 :53Z 2014 -02 -19T19 :31 :17Z 2008 -12 en_US 2009 -05 -15 en_US
dc.identifier.uri http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2361
dc.description.abstract Success of acid fracturing treatment depends greatly on the created conductivity under closure stress . In order to have sufficient conductivity , the fracture face must be non -uniformly etched while the fracture strength maintained to withstand the closure stress . While there have been several experimental studies conducted on acid fracturing , most of these have not scaled experiments to field conditions and did not account for the effect of rock weakening and etching pattern . Hence , acid fracture conductivity predictions based on the above works have not been able to match actual results . In order to develop a more appropriate and accurate prediction of acid fracturing treatment outcome , a laboratory facility was developed that is properly scaled to field conditions and enables analysis of etching pattern and rock strength . A systematic experimental study that covered a variety of formations , acid types , and acid contact times was conducted . An acid fracture conductivity correlation was developed based on etched volume , etched pattern , and fracture strength under closure stress . Results suggested that there is an optimal time of acid exposure resulting in maximum fracture conductivity . There were large differences in the conductivity created with the different acid systems tested due to different etching patterns and degree of rock strength weakening . There was an optimal acid system depending on formation type , contact time and overburden stress . The acid fracture conductivities measured did not agree with the predictions of the Nierode -Kruk correlation . The newly developed correlation predicts conductivity much closer as it includes the effect of rock strength and surface etching pattern on resulting conductivity . en_US
dc.format.medium electronic en_US
dc.format.mimetype application /pdf en_US
dc.language.iso en _US en_US
dc.subject Acid Fracturing en_US
dc.title Laboratory -scale fracture conductivity created by acid etching en_US
dc.type Book en
dc.type.genre Electronic Dissertation en_US
dc.type.material text en_US
dc.format.digitalOrigin born digital en_US


Laboratory-scale fracture conductivity created by acid etching. Available electronically from http : / /hdl .handle .net /1969 .1 /ETD -TAMU -2361 .

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