Replacing Wireline Formation Pressure with Formation Pressure While Drilling in Long Horizontal Wells

Larsen, Jens Kjell; Maeso, Carlos; Liu, Chunlin Forrest; Narayanan, Ramdas; Noman, Rashed

doi:10.2523/12103-ms

Cited by 6 publications

(3 citation statements)

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“…4 As these correlations are prone to error (unless they are discriminated based on facies), one way to safeguard against unrealistic values is to calibrate the permeability log to mobility points obtained from formation testing while drilling. 5 A dozen mobility points would be a minimum requirement to achieve a good calibration. Another possibility is to use advanced petrophysical logging techniques (e.g., NMR), along with mobility points, to get a better handle on the near-wellbore permeability.…”

Section: Fig 1: Pi-vs-reservoir Footagementioning

confidence: 99%

Method and Utility of Well Productivity Estimation during Drilling

Zhang¹,

Jalali²

2010

Proceedings of International Oil and Gas Conference and Exhibition in China

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In this paper we describe two possible use cases of well productivity estimation obtained during the reservoir drilling process. The first concerns estimating a minimum and maximum value for the remaining reservoir footage that is required (beyond bit position) to achieve a target Productivity Index for the well. Thus the only criterion is well productivity not cost. The second concerns deciding within a pre-defined window the termination point of the well based on operator's cost-benefit criteria. The paper emphasizes description of use-case rather than description of the detailed methodology for obtaining these estimates. This is because feedback is required from teams involved in planning and execution of development wells on realistic and worthwhile use-cases, before deciding which option for productivity estimation is most appropriate and most efficient. In this paper, we present a basic method and simple examples based on synthetic data and mathematical solutions available in the literature. We place this in the context of reservoir drilling operations and decision-making.

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Section: Fig 1: Pi-vs-reservoir Footagementioning

confidence: 99%

Method and Utility of Well Productivity Estimation during Drilling

Zhang¹,

Jalali²

2010

Proceedings of International Oil and Gas Conference and Exhibition in China

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“…Они способны решать широкий круг задач, особенно в условиях бурения на шельфе [6], а также скважин с протяженными горизонтальными секциями [7]. Они способны решать широкий круг задач, особенно в условиях бурения на шельфе [6], а также скважин с протяженными горизонтальными секциями [7].…”

Section: Introductionunclassified

Formation Pressure While Drilling Technology Applied in Arctic Environment: Yamal Region Case Study (Russian)

Ivashin¹,

Truba²,

Zhernakov³

et al. 2015

SPE Russian Petroleum Technology Conference

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“…They have had widespread application and success especially in difficult offshore environemnts (Mishra, 2007) and very long horizontal sections (Larsen, 2008) but until recently they have been limited to high cost, deepwater environments. In many land environments Wireline Formation Tester (WFT) tools have often made more economic sense.…”

Section: Introductionmentioning

confidence: 99%

Formation Pressure While Drilling Technology Applied in Arctic Environment: Yamal Region Case Study

et al. 2015

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Formation Pressure While Drilling tools were introduced to the industry several years ago (Pop, 2005). They have had widespread application and success especially in difficult offshore environemnts (Mishra, 2007) and very long horizontal sections (Larsen, 2008) but until recently they have been limited to high cost, deepwater environments. In many land environments Wireline Formation Tester (WFT) tools have often made more economic sense. In Russia FPWD tools have been run in the North Caspian and offshore Sakhalin both for drilling optimization (James, 2012) and for formation pressure guided well placement (Gupta, 2013) but had not ever been run on Land. In 2014, however a unique opportunity presented itself with very high angle wells drilled by Novatek in the field under Taz Bay. The wells being drilled had over 7000 m of vertical departure with deviation over 70 degrees. Additionally, since the field had been on production for some time, the wells were expected to encounter highly depleted sand layers. This implied highly unstable hole conditions and a significant risk of differential sticking. However, understanding the current reservoir pressure and therefore the amount of depletion was critical for managing the drilling hazards for this and future wells and for an accurate update of the hydrodynamic model. Given the risks associated with the hole instability a pipe-conveyed WFT was judged to be too risky and the FPWD tool was proposed.In this paper we will divide our presentation of this operation into three areas: conveyance and operational considerations, pretest design and execution and data analysis and integration

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Replacing Wireline Formation Pressure with Formation Pressure While Drilling in Long Horizontal Wells

Cited by 6 publications

References 0 publications

Method and Utility of Well Productivity Estimation during Drilling

Method and Utility of Well Productivity Estimation during Drilling

Formation Pressure While Drilling Technology Applied in Arctic Environment: Yamal Region Case Study (Russian)

Formation Pressure While Drilling Technology Applied in Arctic Environment: Yamal Region Case Study

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