[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"api:\u002Fprojects\u002Fintelligent-boreholes-aba4f08db9f6c814":3,"api:\u002Fsite":34},{"data":4},{"slug":5,"project_no":6,"name":7,"summary":8,"year_grant":9,"date_start":10,"date_end":11,"lead_organization":12,"program_lines":13,"coretasks":19,"kia":23,"goal":24,"results":25,"budget_total":25,"budget_is_estimated":26,"organizations":27},"intelligent-boreholes-aba4f08db9f6c814","TNO - IB","Intelligent Boreholes","Background \nDrilling boreholes provides essential information about the geological layering and formation properties. This information is crucial for completion of the borehole as water well or evaluating the potential of the subsurface for groundwater production, freshwater storage (ASR), heat storage (ATES) or dewatering. In the Netherlands, the most \ncommonly used method for drilling boreholes in unconsolidated formations is rotational drilling with water-based mud. However, the reliability of borehole descriptions based on cuttings (the soil material brought up during drilling) is often low. Misinterpretation can result in poor well design which may lead to reduced productivity. \nFurthermore, the poor reliability inhibits the use of cheaper, faster and low CO2-footprint direct flush drillings for exploration boreholes thus keeping them relatively expensive (50 – 200 k€). This leads to unnecessarily high costs of fresh water and heat",2025,"2026-01-01","2028-12-31","Nederlandse Organisatie voor toegepast-natuurwetenschappelijk onderzoek TNO",[14],{"slug":15,"title":16,"color":17,"role":18},"een-weerbare-veilige-delta","Een weerbare, veilige delta","#000000","primary",[20],{"slug":21,"title":22,"color":17,"role":18},"slimme-instandhouding-en-versnelling-van-de-uitvoeringsopgave","Slimme instandhouding en versnelling van de uitvoeringsopgave","Klimaat en Energie - B4 Warmte en koude \u002F Landbouw, Water, Voedsel - 3C Toekomstbestendig zoetwatersysteem","Background and Motivation\nBoreholes provide essential subsurface information for civil engineering, groundwater, and geothermal projects. Poor evaluation can lead to costly design errors, such as misplacement of casings or well screens, causing sand production, low yields, or unusable wells.\nIn shallow unconsolidated formations (10–500 m), >99% of water wells are drilled using rotational methods with water-based mud because cable tool drilling, while accurate, is too slow and costly. However, rotational drilling relies on cuttings transported in drilling mud, which are prone to contamination, mixing, and subjective interpretation. Descriptions vary widely between drillers, and geophysical logging is seldom performed due to costs and scheduling, further increasing uncertainty. Direct flush drilling worsens mixing of cuttings, making exploration boreholes and pumping tests expensive and carbon-intensive.\nGeological features such as thin s",null,true,[28,29,32],{"name":12,"type":25,"country":25,"is_lead":26,"is_participant":26},{"name":30,"type":25,"country":25,"is_lead":31,"is_participant":26},"N.V. PWN Waterleidingbedrijf Noord-Holland",false,{"name":33,"type":25,"country":25,"is_lead":31,"is_participant":26},"Technische Universiteit Delft",{"data":35},{"seo_title":36,"seo_description":36,"seo_image_url":25},""]