Case Study: First Experience of Developing an Influx Management Envelope IME for a Deepwater MPD Operation

Gabaldon, Oscar; Brand, Patrick; Čulen, Martin; Haq, Inam U.; Gonzalez-Luis, R. A.; Silva, T. Pinheiro Da; Puerto, G.; Bacon, William

doi:10.2118/185289-ms

Cited by 14 publications

(2 citation statements)

References 4 publications

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“…In the original IME paper, Culen et al (2016) does simplifications to make calculation of this kick envelope curve explicit and analytically solvable. Gabaldon et al (2017) shows that this approach might be overly conservative by comparing this to a high fidelity simulator. Fig.2 shows how the output of the IME calculations are presented.…”

Section: Influx Management Envelope (Ime)mentioning

confidence: 99%

The Influx-Management Envelope Considering Real-Fluid Behavior

Berg

Evjen

Velmurugan

et al. 2019

SPE Drilling &Amp; Completion

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The Influx Management Envelope (IME) Culen et al. (2016), is a decision making tool for how to deal with a influx during managed pressure drilling (MPD) operations that offers a substantial improvement over the traditional MPD Well Control Matrix (WCM). However, in the case study by Gabaldon et al. (2017), it has been found that the simplified analytical solution introduced by Culen et al. (2016) makes the IME inaccurate for many real-world applications. This paper extends the original IME that considers the gas migration in the annulus as a single bubble, without making the simplifying assumptions that are required to make the equations explicit and analytically solvable. The underlying equations that are required to develop the IME is derived from first principles and it is shown that using realistic equations of state (EOS) for gas, and a single-bubble type model, the equations for the IME can be numerically solved yielding less conservative limits. The proposed approach is significantly faster than constructing the IME through high-fidelity simulations. The proposed method allows the calculation of peak circulating pressure at the surface and the maximum weak point pressure for a given kick size and initial shut-in pressure, as well as a kick envelope with respect to formation limits. This makes the contributions of this paper relevant for traditional well control decision making as well. The effect of considering various simplifying assumptions on the resulting IME is studied and different scenarios that compare the results of the proposed approach with that of the original single bubble equation for the IME by Culen et al. (2016) is presented.

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Section: Influx Management Envelope (Ime)mentioning

confidence: 99%

The Influx-Management Envelope Considering Real-Fluid Behavior

Berg

Evjen

Velmurugan

et al. 2019

SPE Drilling &Amp; Completion

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“…Work stress is a feeling of depression experienced by an employee in dealing with work that can cause unstable emotions, feelings of restlessness, aloofness, and difficulty sleeping (Mangkunegara & Waris, 2015). Work stress can also be referred to as a feeling related to pressure, work ambiguity, frustration, and feelings of fear that come from work (Gabaldon et al, 2017). Work stress can also affect employees' condition, so excessive Internal Working Conditions and Well-being of Bank Employees during the Pandemic: … Research and Social Sciences, 2022 | 109 stress can threaten someone in carrying out their activities and further disrupt the implementation of employee work (May et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

Internal Working Conditions and Well-being of Bank Employees during the Pandemic: A Case Study of Yogyakarta City

Setiawan

2022

JERSS

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Since the pandemic conditions, the well-being of employees in Indonesia has continued to decline. The Work Trend Index survey from Microsoft stated that the level of employee well-being reached 68% in 2019, which then dropped to 61% in 2021. This decline in well-being is inseparable from the relationship between the company and employees, manifested in the internal work situation. This study aims to identify the influence of internal working conditions on the well-being of employees, especially in the banking sector, considering the pressure and work stress are pretty heavy. Banking employees are vulnerable to work stress due to high pressure, competition, and demands to provide the best service. Specifically, This study compares the well-being of employees in conventional and Islamic banks, considering that there are differences in the work system between the two. The city of Yogyakarta was then chosen as the object of this research because of the low City Minimum Wage (UMK) of Yogyakarta compared to the five other provincial capitals on the island of Java. The data obtained through a questionnaire from as many as 107 respondents were then processed using multiple regression analysis. The finding of this study is that the well-being of conventional bank employees is statistically higher than that of Islamic banks. In general, work pressure has a negative and significant effect on well-being. Like income, work motivation also positively and significantly impacts well-being.

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Use of Managed Pressure Drilling Paved the Way to a Massive Gas Field Discovery in Egypt Western Desert: Case History

Emam¹,

Brand²,

Gabaldon³

et al. 2018

Day 2 Tue, January 30, 2018

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The BTE – 2 was planned as a land based deep vertical exploration well in Egypt (the deepest ever drilled by Bapetco), designed to evaluate the Abu Roash, Bahariya and Kharita formations, testing the Kharita gas reservoirs and leading into the development of the entire BTE prospect. The complexities included HT classification, formation pressures uncertainties, deep total depth, and introducing a new technology, Managed Pressure Drilling (MPD), to the rig. MPD played a pivotal role in the major discovery of the exploratory "BTE – 2" well, which led to initial estimated in place volumes of 0.8 TCF for the BTE prospect. MPD allowed the operator to reach the reservoir section by successfully navigating the 0.45 ppg operating window in the upper section. MPD also created a wide range of benefits throughout drilling the 1080 meters section, including managing the BHP through the narrow drilling window, real time prognosis of the pore pressure and fracture gradients incorporating the use of Pressure While Drilling technology, efficiently managing drilling through severe conditions, optimizing logging operations and MPD running and cementing of the 7 inches liner. A high Intensity kick was detected by the MPD system in Abu Roash "G" formation. Implementing the MPD assisted shut in method helped minimizing influx size. The kick was initially circulated conventionally and the MPD system was engaged during the second circulation while slightly increasing the Mud Weight. Using the MPD system helped to control the annular pressure profile during multiple rig pump problems and motor stalling events. Due to the small operating window, running the 7 inches liner was a major challenge, even while using the MPD system. Non homogeneous drilling fluid, high loss rates and high PP added complexity to the process. Establishing a closed loop system created a safer and better monitoring and controlling system for the 7 inches liner running operations. Managed Pressure Cementing was the only valid and reliable method to cement the 7 inches liner in place. The MPD system was used to manage the slim drilling window, and the Coriolis flow meter helped to identify the required pressure values to minimize associated losses. Employing the MPD Constant Bottom Hole Pressure (CBHP) technique resulted in numerous learnings, especially when the MPD technique is a first use for the drilling rig crews. This paper highlights and emphasizes the distinguished learnings (not specific to a particular project) that could help in planning and implementation of future MPD wells.

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Case Study: First Experience of Developing an Influx Management Envelope IME for a Deepwater MPD Operation

Cited by 14 publications

References 4 publications

The Influx-Management Envelope Considering Real-Fluid Behavior

The Influx-Management Envelope Considering Real-Fluid Behavior

Internal Working Conditions and Well-being of Bank Employees during the Pandemic: A Case Study of Yogyakarta City

Use of Managed Pressure Drilling Paved the Way to a Massive Gas Field Discovery in Egypt Western Desert: Case History

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