The quality, robustness and philosophy of well abandonment and decommissioning guidelines vary by country.
In addition, new well plug and abandonment (P&A) technologies are typically not covered within these existing guidelines e.g. resin plugs and "melting the cap rock"
Note: New technologies will be discussed in more detail in future articles
Many Operators today are experiencing challenges in planning for well P&A due to a lack of centralised data, limited sharing of experience and knowledge, varying types of data and formats and often poor quality data - especially on orphan or old wells and non-operated assets.
At the time of writing, there is no single, low cost methodology for plugging wells. Furthermore, well P&A standards and designs vary by operator and country.
A lack of benchmarks and limited standardisation have led to cost overruns of 30% to more than 100% and a 14% increase in asset retirement obligations annually. Source: www.bcg.com
Today our industry is facing a shortage of experienced perssonel due to the on-going "great crew change." Well abandonment and decommissioning requires a range of technical and non-technical skills and experience, and it competes for this limited talent pool with other activities such as exploration and development.
Future skill shortages will necessitate fast access to reliable data and smart tools to improve efficiency and reduce cost.
This is an area of growing concern and interest within our industry and one which will need to be given serious consideration if we are to ensure that well abandonment and decommissioning activities are conducted in such a manner that they ensure long-term integrity of the well P&A. Questions that need to be addressed include the following:
*This article was first published on 14 July 2017 by Mark Plummer and is reprinted here with full permission.
*About the Writer:
Mark Plummer is a Drilling Engineer Consultant (HPHT) with exposure to a variety of onshore and deepwater offshore projects providing office-based and wellsite support to operators including Inpex, Oilsearch, Santos and Woodside.
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Headline crude prices for the week beginning 11 February 2019 – Brent: US$61/b; WTI: US$52/b
Headlines of the week
Midstream & Downstream
Global liquid fuels
Electricity, coal, renewables, and emissions
2018 was a year that started with crude prices at US$62/b and ended at US$46/b. In between those two points, prices had gently risen up to peak of US$80/b as the oil world worried about the impact of new American sanctions on Iran in September before crashing down in the last two months on a rising tide of American production. What did that mean for the financial health of the industry over the last quarter and last year?
Nothing negative, it appears. With the last of the financial results from supermajors released, the world’s largest oil firms reported strong profits for Q418 and blockbuster profits for the full year 2018. Despite the blip in prices, the efforts of the supermajors – along with the rest of the industry – to keep costs in check after being burnt by the 2015 crash has paid off.
ExxonMobil, for example, may have missed analyst expectations for 4Q18 revenue at US$71.9 billion, but reported a better-than-expected net profit of US$6 billion. The latter was down 28% y-o-y, but the Q417 figure included a one-off benefit related to then-implemented US tax reform. Full year net profit was even better – up 5.7% to US$20.8 billion as upstream production rose to 4.01 mmboe/d – allowing ExxonMobil to come close to reclaiming its title of the world’s most profitable oil company.
But for now, that title is still held by Shell, which managed to eclipse ExxonMobil with full year net profits of US$21.4 billion. That’s the best annual results for the Anglo-Dutch firm since 2014; product of the deep and painful cost-cutting measures implemented after. Shell’s gamble in purchasing the BG Group for US$53 billion – which sparked a spat of asset sales to pare down debt – has paid off, with contributions from LNG trading named as a strong contributor to financial performance. Shell’s upstream output for 2018 came in at 3.78 mmb/d and the company is also looking to follow in the footsteps of ExxonMobil, Chevron and BP in the Permian, where it admits its footprint is currently ‘a bit small’.
Shell’s fellow British firm BP also reported its highest profits since 2014, doubling its net profits for the full year 2018 on a 65% jump in 4Q18 profits. It completes a long recovery for the firm, which has struggled since the Deepwater Horizon disaster in 2010, allowing it to focus on the future – specifically US shale through the recent US$10.5 billion purchase of BHP’s Permian assets. Chevron, too, is focusing on onshore shale, as surging Permian output drove full year net profit up by 60.8% and 4Q18 net profit up by 19.9%. Chevron is also increasingly focusing on vertical integration again – to capture the full value of surging Texas crude by expanding its refining facilities in Texas, just as ExxonMobil is doing in Beaumont. French major Total’s figures may have been less impressive in percentage terms – but that it is coming from a higher 2017 base, when it outperformed its bigger supermajor cousins.
So, despite the year ending with crude prices in the doldrums, 2018 seems to be proof of Big Oil’s ability to better weather price downturns after years of discipline. Some of the control is loosening – major upstream investments have either been sanctioned or planned since 2018 – but there is still enough restraint left over to keep the oil industry in the black when trends turn sour.
Supermajor Net Profits for 4Q18 and 2018
- 4Q18 – Net profit US$6 billion (-28%);
- 2018 – Net profit US$20.8 (+5.7%)
- 4Q18 – Net profit US$5.69 billion (+32.3%);
- 2018 – Net profit US$21.4 billion (+36%)
- 4Q18 – Net profit US$3.73 billion (+19.9%);
- 2018 – Net profit US$14.8 billion (+60.8%)
- 4Q18 – Net profit US$3.48 billion (+65%);
- 2018 - Net profit US$12.7 billion (+105%)
- 4Q18 – Net profit US$3.88 billion (+16%);
- 2018 - Net profit US$13.6 billion (+28%)