Impact of elliptical boreholes on in situ stress estimation from leak-off test data

Abstract We developed an inversion technique to determine in situ stresses for elliptical boreholes of arbitrary trajectory. In this approach, borehole geometry, drilling-induced fracture information, and other available leak-off test data were used to construct a mathematical model, which was in tu...

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Autores principales:	Hong Xue Han, Shunde Yin, Bernt Sigve Aadnoy
Formato:	article
Lenguaje:	EN
Publicado:	KeAi Communications Co., Ltd. 2018
Materias:	Inversion Leak-off test data Elliptical borehole In situ stress Science Q Petrology QE420-499
Acceso en línea:	https://doaj.org/article/afb9ed4ba2d547da8dd0672b4aa38233
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spelling	oai:doaj.org-article:afb9ed4ba2d547da8dd0672b4aa382332021-12-02T04:46:16ZImpact of elliptical boreholes on in situ stress estimation from leak-off test data10.1007/s12182-018-0248-81672-51071995-8226https://doaj.org/article/afb9ed4ba2d547da8dd0672b4aa382332018-07-01T00:00:00Zhttp://link.springer.com/article/10.1007/s12182-018-0248-8https://doaj.org/toc/1672-5107https://doaj.org/toc/1995-8226Abstract We developed an inversion technique to determine in situ stresses for elliptical boreholes of arbitrary trajectory. In this approach, borehole geometry, drilling-induced fracture information, and other available leak-off test data were used to construct a mathematical model, which was in turn applied to finding the inverse of an overdetermined system of equations. The method has been demonstrated by a case study in the Appalachian Basin, USA. The calculated horizontal stresses are in reasonable agreement with the reported regional stress study of the area, although there are no field measurement data of the studied well for direct calibration. The results also indicate that 2% of axis difference in the elliptical borehole geometry can cause a 5% difference in minimum horizontal stress calculation and a 10% difference in maximum horizontal stress calculation.Hong Xue HanShunde YinBernt Sigve AadnoyKeAi Communications Co., Ltd.articleInversionLeak-off test dataElliptical boreholeIn situ stressScienceQPetrologyQE420-499ENPetroleum Science, Vol 15, Iss 4, Pp 794-800 (2018)
institution	DOAJ
collection	DOAJ
language	EN
topic	Inversion Leak-off test data Elliptical borehole In situ stress Science Q Petrology QE420-499
spellingShingle	Inversion Leak-off test data Elliptical borehole In situ stress Science Q Petrology QE420-499 Hong Xue Han Shunde Yin Bernt Sigve Aadnoy Impact of elliptical boreholes on in situ stress estimation from leak-off test data
description	Abstract We developed an inversion technique to determine in situ stresses for elliptical boreholes of arbitrary trajectory. In this approach, borehole geometry, drilling-induced fracture information, and other available leak-off test data were used to construct a mathematical model, which was in turn applied to finding the inverse of an overdetermined system of equations. The method has been demonstrated by a case study in the Appalachian Basin, USA. The calculated horizontal stresses are in reasonable agreement with the reported regional stress study of the area, although there are no field measurement data of the studied well for direct calibration. The results also indicate that 2% of axis difference in the elliptical borehole geometry can cause a 5% difference in minimum horizontal stress calculation and a 10% difference in maximum horizontal stress calculation.
format	article
author	Hong Xue Han Shunde Yin Bernt Sigve Aadnoy
author_facet	Hong Xue Han Shunde Yin Bernt Sigve Aadnoy
author_sort	Hong Xue Han
title	Impact of elliptical boreholes on in situ stress estimation from leak-off test data
title_short	Impact of elliptical boreholes on in situ stress estimation from leak-off test data
title_full	Impact of elliptical boreholes on in situ stress estimation from leak-off test data
title_fullStr	Impact of elliptical boreholes on in situ stress estimation from leak-off test data
title_full_unstemmed	Impact of elliptical boreholes on in situ stress estimation from leak-off test data
title_sort	impact of elliptical boreholes on in situ stress estimation from leak-off test data
publisher	KeAi Communications Co., Ltd.
publishDate	2018
url	https://doaj.org/article/afb9ed4ba2d547da8dd0672b4aa38233
work_keys_str_mv	AT hongxuehan impactofellipticalboreholesoninsitustressestimationfromleakofftestdata AT shundeyin impactofellipticalboreholesoninsitustressestimationfromleakofftestdata AT berntsigveaadnoy impactofellipticalboreholesoninsitustressestimationfromleakofftestdata
_version_	1718401067096473600

Impact of elliptical boreholes on in situ stress estimation from leak-off test data

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