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Keywords: fracture
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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-200508-MS
... reservoir characterization completion installation and operations drilling fluid chemistry drilling fluid management & disposal drilling fluid selection and formulation drilling fluids and materials annular pressure drilling pipe displacement vertical section ppg fracture gradient wellbore...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 9–10, 2019
Paper Number: SPE-194535-MS
... Abstract Nitrogen Cap Drilling (NCD) is a technique developed by Tengizchevroil (TCO) that enables drilling a highly fractured reservoir under conditions where more conventional pressurized mud cap drilling techniques are not viable. NCD is an extension of the closed hole circulating drilling...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 9–10, 2019
Paper Number: SPE-194555-MS
... Abstract In this work we present field results from a series of drilling operations where advances in sensor and control system technology enables a high degree of automated pressure control in under-balanced drilling (UBD) operations in Siberia, Russia. Traditionally this fractured carbonate...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 9–10, 2019
Paper Number: SPE-194545-MS
... perform an extended production test in close proximity to the original loss well. Since it is not possible to predict where large voids (karsts) and natural fractures could be encountered, contingency to handle high losses, had to be implemented for the horizontal well. During the well planning, further...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 12–13, 2016
Paper Number: SPE-179715-MS
... Abstract The naturally fractured Buda formation, which underlies the Eagle Ford shale play across central and south Texas, is experiencing resurgence in exploration and production activity as a result of improvements in horizontal and underbalanced drilling techniques. Formed during the...
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
... fracture Loss of circulation and kicks have been a challenge for the drilling industry as long as the history of oil well drilling. A kick or a hydrocarbon influx that is not discovered and controlled may increase in severity and result in what is known as a "blowout". It is a common understanding...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, April 8–9, 2014
Paper Number: SPE-168944-MS
... blowout. Utilizing a combination of MPD and UBO techniques, Sidetrack Number 7 successfully met all project and geologic objectives. A Wide variation of pore pressure and fracture pressure equivalent mud densities made accomplishing a primary goal of MPD, ("to precisely control the annular pressure...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling & Underbalanced Operations Conference & Exhibition, April 8–9, 2014
Paper Number: SPE-168956-MS
... Drilling interaction zone choke pressure FMCD well control annular pressure drilling migration MCD operation operator sacrificial fluid Formation Fluid Drilling PMCD gradient drilling technique fracture signa engineering corp MudCap Drilling, a variation of MPD, can help drill...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, April 17–18, 2013
Paper Number: SPE-164576-MS
... carbonate reservoirs. Some of these reservoirs, especially the pinnacle structures are characterized by the presence of karsts and fractures leading to total mud losses. PETRONAS has been exploring carbonate reservoirs in this area since the 90s. However, as more prospects being explored, the challenge...
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 SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, February 24–25, 2010
Paper Number: SPE-130326-MS
... As for drilling mud loss, no thorough investigation has been carried out that correlates the actual size of the basement rock fractures versus pressure gradient when lost circulation occurs. Thus far, the sizes of the fracture channels, their structure and length cannot be predicted. Absence of...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference & Exhibition, February 12–13, 2009
Paper Number: SPE-122270-MS
...) within the downhole pressure limits, pore and fracture. Previous attempts to improve drilling were made using just RCD, then a continuous circulation system and later on the E-CD valves were used together with the RCD on other wells, but, even though improvements were seen, those were not enough to...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference & Exhibition, February 12–13, 2009
Paper Number: SPE-122272-MS
... discovered in the late 1950's while searching for a deeper formation Fig. 1. Although initially developed with vertical wells in 640 acre spacing and traditional hydraulic fracture stimulation, vertical drilling was abandoned beginning in 1997 when the well spacing was downsized to 320 acres and replaced...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling and Underbalanced Operations Conference & Exhibition, February 12–13, 2009
Paper Number: SPE-122275-MS
... Abstract This paper describes the results of an investigation of productivity and recovery improvement in naturally fractured reservoirs when using underbalanced drilling (UBD) technology in horizontal wells. A numerical simulator is used to simulate the results in terms of local changes in...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, January 28–29, 2008
Paper Number: SPE-113684-MS
...-phase flow requirements, coiled tubing drilling (CTD) quickly emerged as the only viable option. Since the reservoir is fractured carbonate, with most of the gas production through the fractures, and since the reservoir pressure is sub-hydrostatic, the Margham field was an ideal candidate for UBD. The...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, January 28–29, 2008
Paper Number: SPE-113673-MS
... Oil & Gas UBD successful use ub well spe iadc 113673 field 4 fracture reservoir international association of drilling contractors Drilling Petroleum Development Oman oil rate water injection society of petroleum engineers SPE/IADC 113673 Successful Use of Underbalanced-Drilling in...
Proceedings Papers

Paper presented at the SPE/IADC Managed Pressure Drilling and Underbalanced Operations Conference and Exhibition, January 28–29, 2008
Paper Number: SPE-114703-MS
... effectiveness of this drilling technique and enhance its acceptability in operations where well productivity is a major consideration. A combination of MPD and downhole isolation technologies was recently used successfully to drill a highly prolific, fractured gas reservoir in Suban Field, South Sumatra...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling & Underbalanced Operations, March 28–29, 2007
Paper Number: SPE-108337-MS
...) through the Wahoo's hard carbonate formation, Frequent total losses of drilling fluid when drilling conventionally, Poor understanding of the orientation, frequency and impact of fractures on production. The main objective of implementing underbalance technology in the Lisburne Field was...
Proceedings Papers

Paper presented at the IADC/SPE Managed Pressure Drilling & Underbalanced Operations, March 28–29, 2007
Paper Number: SPE-108335-MS
... evaluation fracture permeability UBD objective kg cm2 iadc spe 108335 YPF IADC/SPE 108335 Underbalanced Drilling Technology for the Exploration of Tight Sands in the Neuquen Basin: An Evaluation of Results From 11 Wells Daniel G. Garcia, SPE, Repsol YPF, and Juan D. Moreyra, SPE, Pride San Antonio...
Proceedings Papers

Paper presented at the SPE/IADC Underbalanced Technology Conference and Exhibition, October 11–12, 2004
Paper Number: SPE-91579-MS
... Abstract Maintained pressure management and fracture network mapping are key issues for successful well construction in fractured carbonate reservoirs. Prediction and characterization of the fracture network prior to drilling is very difficult and challenge optimized well direction and...

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