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dc.contributor.authorForthun, Shirin Charlotte
dc.date.accessioned2016-09-21T08:03:53Z
dc.date.available2016-09-21T08:03:53Z
dc.date.issued2016-06-13
dc.identifier.urihttp://hdl.handle.net/11250/2409063
dc.descriptionMaster's thesis in Petroleum engineeringnb_NO
dc.description.abstractThis thesis will present relevant literature study and theory for the experimental and simulation parts. Several water based drilling fluids containing high and low concentrations of TiN, MoS2 and Graphene in nano-size were formulated and characterised in terms of rheology, frictional behaviour, viscoelasticity and filtrate loss. A performance simulation study on torque, drag and hydraulics were executed for the best selected fluid systems. From overall studies, the results show among others that: ⋅ The nano type and concentration in various polymers improve the conventional drilling fluid system in terms such as rheology, lubricity and viscoelastic properties. ⋅ The addition of 0.04 wt% and 0.16 wt% of MoS2 in the conventional fluid system resulted in a friction reduction of 34.8% and 44.7% respectively. In terms of torque and drag reduction, the simulation results exhibited that the fluids allow for 15.2% and 25.9% extended drilling as compared to the conventional nano-free system. ⋅ The addition of 0.03 wt% and 0.04 wt% of TiN in the conventional fluid system resulted in a friction reduction of 23.6% and 16.7% respectively. In terms of torque and drag reduction, the simulation results exhibited that the fluids allow for 9.9% and 14.5% extended drilling as compared to the conventional nano-free system. ⋅ The addition of 0.01 wt% and 0.02 wt% of Graphene in the conventional fluid system resulted in a friction reduction of 8.3% and 10.1% respectively. In terms of torque and drag reduction, the simulation results exhibited that this fluid allows for 4.0% and 4.7% extended drilling as compared to the conventional nano-free system. ⋅ All of the tested fluids exhibited the best friction reduction with low concentrations of nano. Rheology testing exhibited that the filtrate loss decreased for very low concentrations of TiN and MoS2, while it increased for higher concentrations. The filtrate loss increased for all concentrations of Graphene. The objective of this thesis was to investigate if it was possible to improve the rheology and the lubricating effect of conventional water based mud by adding nanoparticles to the fluid system. The results show that the application of nano in a bentonite water based system could have the potential to replace the oil based mud in terms of low friction performance.nb_NO
dc.language.isoengnb_NO
dc.publisherUniversity of Stavanger, Norwaynb_NO
dc.relation.ispartofseriesMasteroppgave/UIS-TN-IPT/2016;
dc.subjectboreteknologinb_NO
dc.subjectpetroleumsteknologinb_NO
dc.subjectpetroleum engineeringnb_NO
dc.subjectdrillingnb_NO
dc.subjectfriction reductionnb_NO
dc.subjecthydraulikknb_NO
dc.subjecttorque and dragnb_NO
dc.subjectbrønnteknologinb_NO
dc.subjectwell technologynb_NO
dc.titleEffect of Nano Additives on Friction in a Bentonite Water Based Systemnb_NO
dc.typeMaster thesisnb_NO
dc.subject.nsiVDP::Technology: 500::Rock and petroleum disciplines: 510::Petroleum engineering: 512nb_NO


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