Horizontal Wells are Now used for Industrial Developments

Bosio, J.

doi:10.2118/14614-ms

Cited by 4 publications

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“…5 In 1982, Jacques Bosio of Elf directed one of the very early controlled horizontal wells, and the first one offshore at Rospo Mare in Italy. A visit with Mr. Bosio to the site convinced NPD that horizontal completions were possible once the down hole measuring technology while drilling improved [30]. The enabling technologies to achieve this were in place or under development.…”

Section: The Gullfaks Example E a Flexible Large Engineering Programmentioning

confidence: 99%

Public–private partnership for improved hydrocarbon recovery – Lessons from Norway's major development programs

Åm¹,

Heiberg²

2014

Energy Strategy Reviews

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Section: The Gullfaks Example E a Flexible Large Engineering Programmentioning

confidence: 99%

Public–private partnership for improved hydrocarbon recovery – Lessons from Norway's major development programs

Åm¹,

Heiberg²

2014

Energy Strategy Reviews

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“…In this early application, heavy oil production from the horizontal well was twenty times that expected from a standard vertical well producer, while the cost was only double (Bosio, 1986). Since then the oil industry has continuously enhanced the potential of horizontal wells and the demand for technology for supporting this activity has been for the most part satisfied.…”

Section: Introductionmentioning

confidence: 99%

Improved Petrophysical Analysis in Horizontal Wells: From Log Modeling Through Formation Evaluation to Reducing Model Uncertainty - A Case Study

Valdisturlo

Mele

Maggs

et al. 2013

EAGE Annual Conference &Amp; Exhibition Incorporating SPE Europec

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This paper presents the results of using a new workflow to correct and validate logging-while-drilling measurements (LWD) from horizontal wells, and the impact of the results in the petrophysical answers derived from the measurements. The workflow involves building a layered geological model and modeling the log responses in a model-compare-update loop to obtain the log properties of each layer. While similar methodology has been available in the past, the process was laborious and time consuming, and therefore it was not well applied in the industry. The paper demonstrates how the new process addresses the most common effects in horizontal wells in a timely and efficient manner, allowing it to form a part of petrophysical analysis in high angle and horizontal wells. In high angle and horizontal wells it is often difficult to apply the traditional petrophysical interpretation techniques normally used in vertical wells, due to geometric effects on the data in particular the resistivity logs. These effects include local layering or resistivity anisotropy, and boundary effects such as proximity and polarization horns on the resistivity measurements. Other effects complicating the borehole environment include asymmetric invasion profiles, the presence of cuttings beds and drilling mud segregation. This means that the data is challenging to interpret and the petrophysical answers from horizontal wells are not always fully used in static reservoir models. The inclusion of the corrected petrophysical properties from this processing into the static reservoir model reduces uncertainty and improves model accuracy. The workflow was applied on wells in a development field in North America. The reservoir consists of a few tens of feet thick silty sand and siltstone layers deposited in a shelfal environment. The extended reach wells used in the development of the field have long lateral sections (from 5,000 to 10,000 ft). Due to the geological complexity of the area, the wells often cross multiple layers and faults and are actively steered to optimize reservoir contact. The geological environment from static reservoir model was efficiently confirmed and refined, log responses corrected and verified before being used in the petrophysical analysis. The comparison of log responses between vertical and deviated wells was helpful both for quality control and in the well log modeling phase to assess the correct record of petrophysical properties for the input logs and for the modeling results. The update of the log measurements and resulting improvement in petrophysical answers is presented. The workflow requires strong integration between the Reservoir Geology, Drilling and Petrophysics teams. The paper presents a case study of the application of a new workflow to improve petrophysical answers from logging while drilling measurements in high angle and horizontal wells. The study demonstrates how log modeling in high angle and horizontal wells can be used to improve formation evaluation. The improved formation evaluation and updated...

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1989

Developments in Petroleum Science

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Horizontal Wells are Now used for Industrial Developments

Cited by 4 publications

References 0 publications

Public–private partnership for improved hydrocarbon recovery – Lessons from Norway's major development programs

Public–private partnership for improved hydrocarbon recovery – Lessons from Norway's major development programs

Improved Petrophysical Analysis in Horizontal Wells: From Log Modeling Through Formation Evaluation to Reducing Model Uncertainty - A Case Study

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