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公开(公告)号：US12129423B2
公开(公告)日：2024-10-29
申请号：US17957912
申请日：2022-09-30
发明人： Angelo Marinho Vianna , Walter Francisco Cardoso Junior , Fabio Fabri , Sebastiao De Andrade Loureiro , Kaio Augusto Gonzaga , Leonardo Silva De Almeida
摘要： The present invention addresses to a wireline logging method using an aqueous based drilling fluid with xanthan gum and polyols in order to improve the quality of the acquisition of geological data from wireline logging (final logging) in open hole and reducing the risk of the tool getting stuck. It can also be applied in well control situations and used in the integral drilling of the reservoir, but with different application bias of the multifunctional fluid.
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公开(公告)号：US20230265726A1
公开(公告)日：2023-08-24
申请号：US18112052
申请日：2023-02-21
发明人： Angelo Marinho Vianna , Jorge Luiz De Queiros E Feijo , Leonardo Silva De Almeida , Walter Francisco Cardoso Junior , Fabio Fabri
CPC分类号： E21B21/001 , E21B21/01 , E21B21/062 , E21B21/08 , C09K8/206
摘要： The present invention addresses to the use of a viscous fluid in continuous pumping to contain the saline dissolution in a homogeneous way (not limited to just one type of evaporite), highlighting the results of seawater with viscosifiers, due to its simplicity, and that does not have the same impact on the logistical chain as a brine supply. The increase in fluid viscosity limits the diffusion of salt into the medium and thus better contains the dissolution of the well walls, while also promoting a laminar flow regime in the annulus of the well, variables desired to achieve the quality of the operation of cementation. The employment of viscous fluid concentrates allows “on the fly” dilutions with the in-line seawater fraction mixture. The technique can also employ solutions of pre-dispersed viscosifying additives which, when added to seawater, result in a substantial increase in the volume of drilling fluid produced, no longer limited by the unit tank capacity. This allows drilling large extensions of salt. The low salinity viscous fluid is used in drilling operations without fluid return to the drilling rig (riserless) in the presence of a predominantly saline formation, aiming at preserving the phase diameter and improve well construction conditions.
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公开(公告)号：US12123267B2
公开(公告)日：2024-10-22
申请号：US18112052
申请日：2023-02-21
发明人： Angelo Marinho Vianna , Jorge Luiz De Queiros E Feijo , Leonardo Silva De Almeida , Walter Francisco Cardoso, Jr. , Fabio Fabri
CPC分类号： E21B21/001 , C09K8/206 , E21B21/01 , E21B21/062 , E21B21/08
摘要： The present invention addresses to the use of a viscous fluid in continuous pumping to contain the saline dissolution in a homogeneous way (not limited to just one type of evaporite), highlighting the results of seawater with viscosifiers, due to its simplicity, and that does not have the same impact on the logistical chain as a brine supply. The increase in fluid viscosity limits the diffusion of salt into the medium and thus better contains the dissolution of the well walls, while also promoting a laminar flow regime in the annulus of the well, variables desired to achieve the quality of the operation of cementation. The employment of viscous fluid concentrates allows “on the fly” dilutions with the in-line seawater fraction mixture. The technique can also employ solutions of pre-dispersed viscosifying additives which, when added to seawater, result in a substantial increase in the volume of drilling fluid produced, no longer limited by the unit tank capacity. This allows drilling large extensions of salt. The low salinity viscous fluid is used in drilling operations without fluid return to the drilling rig (riserless) in the presence of a predominantly saline formation, aiming at preserving the phase diameter and improve well construction conditions.
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