Mahendra, Jasri (2023) Studi Laboratorium Analisis Pengaruh Dari Cangkang Kerang Pada Lumpur Oil Base Mud Dan Water Base Mud Terhadap Filtration Loss Dan Rheology Lumpur Pemboran. Other thesis, Universitas Islam Riau.

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Abstract

Problems commonly found in drilling mud are the mud being unable to lift cuttings and fluid loss into the rock. Water-based mud itself can be affected by certain temperatures. At a temperature of 122 F the plastic viscosity value, yield point is below the specification standard. Continuous use of oil-based mud will cause excessive fluid loss into the formation. CaCO3 can reduce filtration loss because this type of material from CaCO3 is very suitable because it is a shell that is resistant to pressure and can increase rheology in the drilling mud system. Blood cockle shells contain high levels of calcium carbonate, namely 97%. Blood cockle production is quite large in Riau, amounting to 1,692 tons in 2019. In this study the author conducted research using an experimental method on CaCO3 from shellfish on filtration loss and rheology of drilling mud. mass variation 0 gr,2 gr,4 gr,6 gr at 122F. The results showed that the value of plastic viscosity on water base mud was when using 2 gr CaCO3 by 6 cp to 7 cp when using 4 gr CaCO3 while for oil base mud the use of 2 gr CaCO3 was 8 cp to 8.5 cp when using 4 gr CaCO3. The yield point value for water base mud 2 gr CaCO3 produces 7 lb/ft2 to 8 lb/ft2 when using 4 gr CaCO3, whereas in oil base mud the use of 2 gr CaCO3 produces 9 lb/ft2 to 9.5 lb/ft2 when using 4 gr CaCO3, the CaCO3 filtrate volume can reduce the filtrate volume value, namely in water base mud 6 ml when using 2 grams of CaCO3 to 5.5 ml when using 4 grams of CaCO3 while in oil base mud when using 2 grams of CaCO3 it produces 5.5 ml to 5.2 ml when using 4 gr CaCO3. This is because the use of CaCO3 can increase the value of plastic viscosity and yield point and can reduce the volume of the filtrate.

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