Slimhole Early Kick Detection by Real-Time Drilling Analysis

Swanson, B. W.; Gardner, A.G.; Brown, Nick; Murray, Pippa

doi:10.2118/25708-pa

Cited by 27 publications

(5 citation statements)

References 12 publications

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“…The team includes drilling, completion, production, reservoir, service companies, drilling contractor, permitting, purchasing and management [9]. The unachievable limits must not result in blame game within the organization but should open an honest assessment for improvements.…”

Section: Stability Of Microholesmentioning

confidence: 99%

Estimating the Impact of Microholes on Economy and Environment via Geo Mechanical Simulation

Ansari

Tunio²,

Ali³

et al. 2014

All Days

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Geo-mechanics has always been a challenge during drilling process. It has also been a common observation that 40% of the over-all capex is given away during drilling process. Moreover, it also damages the land mass at large, loads of drill cuttings are generated from subsurface which are disposed on the earth surface, simply affecting the topography. Even, drilling does not prove to be successful in various cases as most of the exploratory wells are found to be dry this issue requires an ultimate solution. A well known technology called microhole drilling has been introduced to cope up with such concern. No doubt, all these specifications are achieved with the help of micro instrumentation.This study reflects the estimation of all the solids as wastes that are generated during the drilling process and imparts the environmental destruction. Microhole has been used effectively so far to hit the wells up to 700ft. Further, serious drilling issues are encountered but with the help of micro instrumentation it can be taken up to 5000ft or even farther. The main aspect that was found during the study that is microholes are drilled with the help of coiled tubing rig which consumes less disturbance area. In order to prove the metal of this technology a geo mechanical simulator is developed and model of microhole is even built on the developed software. The specifications and lithology of lower goru reservoir coordinates were used as input. Later, the results were compared to evaluate the recommended technology to avoid environmental issues and optimize the drilling program.

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Section: Stability Of Microholesmentioning

confidence: 99%

Estimating the Impact of Microholes on Economy and Environment via Geo Mechanical Simulation

Ansari

Tunio²,

Ali³

et al. 2014

All Days

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“…However, since the BOP is closed, the pressure will start to increase as more fluids enter the well until the downhole pressure balances the reservoir pressure. Several methods for kick detection have been presented, see [8], [9], [10], [11], [12], [13], [14], [15], however, there is a significant potential to improve existing control, estimation schemes, and kick detection methods. It is of particular interest to improve performance of the schemes during critical drilling operations such as pipe connections, as well as to add kick attenuation capabilities.…”

Section: B Kick Detection and Attenuationmentioning

confidence: 99%

Pressure regulation with kick attenuation in a managed pressure drilling system

Zhou

Stamnes

Aamo

et al. 2009

Proceedings of the 48h IEEE Conference on Decision and Control (CDC) Held Jointly With 2009 28th Chinese Control Conference

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This paper presents a switched control scheme for regulation of the annular pressure in a well during drilling. The main feature is automatic kick attenuation while drilling reservoir sections. A simple mathematical model is presented that captures the dominant phenomena of the drilling system and forms the basis for observer and control design. A switched pressure control algorithm for feedback control of the choke valve opening and the back-pressure pump is proposed, and asymptotic stability properties are established. Kick attenuation is guaranteed for a set of reservoir models, including the most common ones. As part of the control scheme, novel observers for estimation of the flow rate through the bit and kick/loss detection are developed. Simulation results obtained with a high fidelity drilling simulator are presented to demonstrate the effectiveness of the proposed switched control scheme.Index Terms-Managed pressure drilling, adaptive observer, pressure control, kick detection.

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“…Real-time drilling monitoring and analysis have since experienced a rebirth, along with data-mining and integratedteam concepts (Refs. [10][11][12][13], and continuous safety improvement (Ref. 14).…”

Section: Related Literaturementioning

confidence: 99%

Methodology and Benefits of a Drilling Analysis Paradigm

Iyoho¹,

Millheim²,

Virginillo³

et al. 2004

Proceedings of IADC/SPE Drilling Conference

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fax 01-972-952-9435. ___________________________________________________________________________ AbstractThis paper discusses a segment of drilling engineering -drilling analysis --that is assumed to be practiced routinely, but in many cases is not given the necessary attention, time, and resources required.Routinely acquired drilling, geologic, mud-log, and logging data, are shown to be amenable to organization into a knowledge-based structure that permits:• Use of statistical analysis to develop challenging but achievable technical limits, or best composite time (BCT), for similar wells -location, depth, hole size. • Statistics-based best composite cost (BCC), the dollars equivalent of BCT. Both the BCC and BCT represent practical, challenging but achievable benchmarks that are continuously upgraded, providing significant steps in the process of drilling costs reduction. • Specialized learning-curve analysis, trouble-time analysis, flat-time analysis, time vs. depth analysis, cost vs. depth analysis, rig and crew performance evaluation, bit-onbottom and tripping analysis, time distribution plots, etc. • Convenient drilling data cross-correlation with wireline logs, geology and mud-log data, to further delineate drilling problem zones and improve drilling • operational performance.• A historical understanding of well construction that can contribute to continuing drilling improvement, and a method to provide feedback and collaboration with company drilling personnel, rig contractors, and service companies. This paper reviews existing variations, key elements, and typical field applications of drilling analysis, and puts forth the case that drilling analysis should become an integral part of drilling engineering, the same way well-test analysis is an integral part of reservoir engineering. The need for a university curriculum and training on this key discipline is stressed, along with the necessity for management to champion the use of drilling analysis as an on-going process to improve organizational drilling performance.

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Slimhole Early Kick Detection by Real-Time Drilling Analysis

Cited by 27 publications

References 12 publications

Estimating the Impact of Microholes on Economy and Environment via Geo Mechanical Simulation

Estimating the Impact of Microholes on Economy and Environment via Geo Mechanical Simulation

Pressure regulation with kick attenuation in a managed pressure drilling system

Methodology and Benefits of a Drilling Analysis Paradigm

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