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Invisible lost time

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Proceedings Papers

Paper presented at the SPE Kingdom of Saudi Arabia Annual Technical Symposium and Exhibition, April 23–26, 2018
Paper Number: SPE-192319-MS
... (NPT) to the reduction or elimination of Invisible Lost Time (ILT). Traditionally, more focus and efforts are concentrated around the NPT avoidance, as its impact is visible and has a huge and direct financial consequences that leads to increasing well cost. Most oil & gas operators and services...
Proceedings Papers

Paper presented at the ADIPEC, October 31–November 3, 2022
Paper Number: SPE-211751-MS
..., Bond et al. (1996) proposed the concept of Technical Limit (TL) as a "best possible" time to perform a certain operation under specific conditions. Using this platform, the concept of Invisible Lost Time (ILT) was launched as the gap between the actual productive time (PT) and the technical limit (TL...
Proceedings Papers

Paper presented at the SPE North Africa Technical Conference and Exhibition, September 14–16, 2015
Paper Number: SPE-175748-MS
... in a drilling operation, and the inefficiency of these activities increases well costs. This inefficiency can be described as invisible lost time (ILT), which has been shown to contribute to up to 15% of total well cost. It exposes open holes to longer elapsed times which causes hole problems, especially...
Journal Articles
J Pet Technol 63 (09): 83–84.
Paper Number: SPE-0911-0083-JPT
Published: 01 September 2011
...Dennis Denney This article, written by Senior Technology Editor Dennis Denney, contains highlights of paper SPE 138804, ’Rigorous Drilling- Nonproductive-Time Determination and Elimination of Invisible Lost Time: Theory and Case Histories,’ by Eric Maidla, SPE, and William Maidla, SPE, TDE...
Proceedings Papers

Paper presented at the SPE Latin American and Caribbean Petroleum Engineering Conference, December 1–3, 2010
Paper Number: SPE-138804-MS
... cannot measure without a proper data quality control (QC) procedure in place. society of petroleum engineers drilling slip-to-slip connection performance indicator invisible lost time drilling operation case history strategic planning and management benchmarking operator rigorous drilling...
Proceedings Papers

Paper presented at the Offshore Technology Conference, May 2–5, 2022
Paper Number: OTC-32093-MS
... Abstract Technical Limit (TL) and invisible lost time (ILT) are concepts that have contributed to the success of several oil and gas projects around the world since late 90s, many of them documented and presented in international conferences. The TL represents the optimum time for a given...
Proceedings Papers

Paper presented at the SPE Canadian Energy Technology Conference, March 16–17, 2022
Paper Number: SPE-208961-MS
... and technological development of topside equipment, first in isolation and then through systems automation. This paper recognizes these optimization efforts but identifies additional potential to significantly reduce invisible-lost-time (ILT) during tripping operations even further by reducing out-of-slips running...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, September 21–23, 2021
Paper Number: SPE-205993-MS
... stringer and use appropriate parameters to avoid costly HLDs. First field deployments demonstrate a significant improvement in invisible lost time (ILT) caused by deflections of the bit, resulting in a considerable reduction in well delivery costs. drilling measurement machine learning artificial...
Proceedings Papers

Paper presented at the SPE/IADC Middle East Drilling Technology Conference and Exhibition, May 25–27, 2021
Paper Number: SPE-202086-MS
... opportunity in order to maximize the cost saving per well or campaign. Reducing the cost impact and maximizing the drilling efficiency are defined by the way used to calculate the perfect well time by the technical limit, non-productive time (NPT), and invisible lost time (ILT), in an operating company...
Proceedings Papers

Paper presented at the International Petroleum Technology Conference, January 13–15, 2020
Paper Number: IPTC-19657-ABSTRACT
... identifying and reducing this Invisible Lost Time during the Tripping activity helps us to gain control over a previously intangible quantity of lost time. This translates to real world savings and meeting corporate bottom line requirements. Armed with the results for such analysis, Operators can persuade Rig...
Proceedings Papers

Paper presented at the SPE/IADC International Drilling Conference and Exhibition, March 5–7, 2019
Paper Number: SPE-194136-MS
... Abstract This paper covers the development of a key component of an internal system to report invisible lost time (ILT) metrics across drilling operations. Specifically this paper covers the development of a generalizable rig state engine based on the application of supervised machine learning...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 12–15, 2018
Paper Number: SPE-192969-MS
... is another challenge which threats the market. ILT initiative was introduced in the Drilling Function to Drill Wells in more efficiency and high performance considering the priority for safety and integrity. The main objective of ILT is to identify the area's of invisible lost time, track...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 13–16, 2017
Paper Number: SPE-188640-MS
...-free wells ahead of authority for expenditure (AFE) targeting the reduction of nonproductive time (NPT) and invisible lost time (ILT), together with risk management. The workflow begins with a preliminary field analysis to identify the main challenges and areas that needed improvement...
Proceedings Papers

Paper presented at the Abu Dhabi International Petroleum Exhibition & Conference, November 13–16, 2017
Paper Number: SPE-188238-MS
... the data is captured and processed, the operations efficiency is obtained with the computation of the Invisible Lost Time (ILT). Computations are defined in different ways by different operators with different margins. The purpose of this paper is to probe that operational efficiency that can be tracked...
Proceedings Papers

Paper presented at the SPE Annual Technical Conference and Exhibition, October 9–11, 2017
Paper Number: SPE-187270-MS
... Abstract Drilling operations can include invisible lost time (ILT), within productive time and nonproductive time (NPT). ILT is the time lost because a portion of the drilling operation is not performed at maximum efficiency. Current industry techniques use subjective decision making...
Proceedings Papers

Paper presented at the SPE Middle East Oil & Gas Show and Conference, March 6–9, 2017
Paper Number: SPE-183941-MS
... Abstract To optimize drilling operations efficiency and improve well planning methodology, Kuwait Oil Company (KOC) has capitalized on the existence of the real-time drilling decision center (RTDDC) to scrutinize the breakdown of rig operations, detect invisible lost time, and explore measures...
Proceedings Papers

Paper presented at the SPE/IADC Drilling Conference and Exhibition, March 1–3, 2011
Paper Number: SPE-138922-MS
...). drilling operation spe iadc 138922 drilling weight performance indicator rigorous identification percentille statistics benchmarking upstream oil & gas distribution par identification invisible lost time rig strategic planning and management best practice consistency international...
Images
Images
The Relationship between the Perfect well, <span class="search-highlight">Invisible</span> <span class="search-highlight">Lost</span> <span class="search-highlight">Time</span>, Technical L...
Published: 22 October 2007
Fig. 2 The Relationship between the Perfect well, Invisible Lost Time, Technical Limit and Non-Productive Time More
Images
<span class="search-highlight">Invisible</span> <span class="search-highlight">Lost</span> <span class="search-highlight">Time</span>
Published: 23 February 2000
Figure 1.0 Invisible Lost Time More

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