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Keywords: wellbore
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Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, October 29–30, 2020
Paper Number: SPE-200522-MS
... Abstract Non-aqueous drilling fluids used in deepwater drilling operations are conducive to the dissolution of formation gas during wellbore influx events, increasing the risk of gas kicks going unnoticed. This can lead to hazardous riser gas unloading events if kicks are allowed to pass the...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, October 29–30, 2020
Paper Number: SPE-200508-MS
... challenging. On this well, getting liner to bottom without total losses should not have been possible. To address this, a design that used a three mud system in combination with MPD was utilized. With a diversion sub placed at the heel, the wellbore fluid column consisted of a highly underbalanced drilling...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 17–18, 2018
Paper Number: SPE-190001-MS
... Abstract The constant bottomhole pressure variant of MPD is a technique most defined by IADC as "an adaptive drilling process used to precisely control the annular pressure profile throughout the wellbore. The objectives are to ascertain the downhole pressure environment limits and to manage...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 17–18, 2018
Paper Number: SPE-189997-MS
... entering the Spraberry formations which resulted in mud cap or blind drilling in order to reach section total depth (TD). These losses and overall wellbore conditions introduced higher risk and consequences in the form of well control events, wellbore instability, and mechanically or differentially...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, March 28–29, 2017
Paper Number: SPE-185289-MS
... surface equipment. annular pressure drilling SBP operation Upstream Oil & Gas hole section surface pressure limit ime Pump Rate Modeling & Simulation flow rate well control primary wellbore barrier circulation pressure limit consideration wellbore wellbore barrier primary...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, March 28–29, 2017
Paper Number: SPE-185291-MS
... When gas hydrates dissociate or melt it will separate into natural gas and water. The density or volume of the gas will depend of the pressure. Gas released from hydrates that melt deep down in the wellbore will expand less than if the hydrates have been transported high up in the riser and...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, March 28–29, 2017
Paper Number: SPE-185287-MS
... Figure 3 Wellbore trajectory and horizontal displacement for the deepwater, HTHP and onshore case studies The first case study (Case 1) is a deepwater, depleted, naturally fractured formation, and the second case study (Case 2) is a shallow-water jackup rig and a high-temperature and high...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 12–13, 2016
Paper Number: SPE-179184-MS
... check procedure improvement opportunity operation surface pressure MPD equipment exploration well influx annular pressure drilling dynamic flow check procedure application pressure rating wellbore Early in the planning process, a comprehensive assessment of the potential risks and a...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 12–13, 2016
Paper Number: SPE-179188-MS
... wellbore. Extensive wireline logging was completed, both at an intermediate stage and at total depth (TD). Most of the wireline logging was performed under minimal pressure with a logging adaptor installed in the rotating control device (RCD), 9 5/8" casing shooting nipple back to surface and wireline...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 12–13, 2016
Paper Number: SPE-179712-MS
... Upstream Oil & Gas mechanism hydrate circulation riser hydrate formation temperature well control pore pressure gas cap Hydrocarbon influx influx natural gas specific heat capacity gas influx wellbore annular pressure drilling formation temperature hydraulically reduction...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 12–13, 2016
Paper Number: SPE-179713-MS
... Abstract Two hole sections (12-1/4″ x 14-3/4″ and 10-5/8″ x 12-1/4″) were planned to be drilled through sequences of unstable shale and depleted sand packages with no drilling windows, which are defined by the shale Wellbore Stability Gradient (WBSG) delimited by the "intact wellbore wall zero...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference & Exhibition, April 13–14, 2015
Paper Number: SPE-173806-MS
... drilling cement cement job flow rate ECD underbalanced drilling Upstream Oil & Gas mud weight setting casing drilling fluids and materials drilling fluid formulation fluid loss successful case history reduction unconventional shale reservoir spe iadc-173806-m sequence wellbore...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, April 8–9, 2014
Paper Number: SPE-168944-MS
... Abstract Conventional drilling methods initially utilized to drill an east Texas HPHT well, presented in this case history, ultimately failed after six attempts were made by an independent operator to drill a "straightforward" horizontal wellbore. The subject HPHT well proved extremely...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, April 8–9, 2014
Paper Number: SPE-168952-MS
... hanger to isolate the intermediate casing after drill pipe has been pulled out of hole. Underbalanced (UB) drilling is a method where the pressure inside the wellbore is kept lower than that of the fluid pressure of the formation. This can cause the formation fluid to flow into the well naturally...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, April 8–9, 2014
Paper Number: SPE-168958-MS
... drilling window. Please note that at no point is average BHP expected to fall out of drilling margins. Wellbore compressibility of fluids, solids, and gas, wellbore storage effects, and the efficacy of the pulse transmission are key factors to facilitate the analysis. Since the PDS PCV is oscillating...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 17–18, 2013
Paper Number: SPE-164567-MS
... been observed. The decrease in cycle times can be directly attributed to higher ROP, mitigated gas influxes, and minimized lost circulation management. Continuing research of how the effect of MPD has subsequently contributed to decreasing near wellbore damage and potentially increasing overall...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 17–18, 2013
Paper Number: SPE-164560-MS
... Operational challenges include actual vs. predicted leak-off test (LOT) values, margins of error in mud weights, high temperature high pressure fluid behavior, ballooning scenarios and risk of inducing a fracture during pre-flush and/or cement slurry displacement. Wellbore strengthening...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 17–18, 2013
Paper Number: SPE-164575-MS
... density above the sensor under the influence of gravity through a TVD correction, and The friction pressure, contributed by the friction losses resulting from annular flow that is a function of the measured wellbore length above the sensor * . Any applied backpressure at surface – as frequently...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, March 20–21, 2012
Paper Number: SPE-156904-MS
... developed to serve this barrier fluid function. The shear thinning properties of this fluid allow for ease of placement in the wellbore prior to tripping, and when the high density "mud cap" is displaced on top of the barrier fluid the comingling of the tripping fluid and the drilling fluid is prevented...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference & Exhibition, April 5–6, 2011
Paper Number: SPE-143099-MS
... Abstract Closing the wellbore at the top with a Rotating Control Device (RCD) for some kind of Managed Pressure Drilling (MPD) operations raises a number of issues with regards to well control and kick detection. The wellbore is closed and the standard flow check of looking into the well is no...

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