Comparative analysis of financial assurance instruments for oil and gas decommissioning and mine restoration

PETROVIETNAM  
PETROVIETNAM JOURNAL  
Volume 6/2021, pp. 43 - 54  
ISSN 2615-9902  
COMPARATIVE ANALYSIS OF FINANCIAL ASSURANCE  
INSTRUMENTS FOR OIL AND GAS DECOMMISSIONING AND  
MINE RESTORATION  
Le Thi Huyen  
Petrovietnam University  
Email: huyenlt@pvu.edu.vn  
Summary  
This paper introduces how different bonding mechanisms for oil and gas decommissioning and mine restoration can ensure operators’  
accomplishment of restoration/decommissioning liability and affect their budget. Four mechanisms presented and compared herein  
include surety bonds, cash collateral bonds, decommissioning and abandonment provisions, and lease-specific abandonment accounts.  
The author also provides some cautions and recommends amendments for each mechanism to be efficiently applied to oil and gas  
decommissioning in Vietnam so as to assure operators’decommissioning duties without discouraging their potential investments.  
Key words: Financial assurance, bonding mechanisms, decommissioning, restoration.  
1. Introduction  
Inanoilandgasoraminingproject,decommissioning1  
how they affect the operator’s budget, and (iii) which  
type of bond instruments is most effective in ensuring the  
operator’s compliance without highly discouraging their  
investment?  
or restoration2 occurs at the closure phase3 when  
extraction or production operations terminate. Since  
no more revenues are created, financial assurance  
mechanisms aim to provide adequate funds for such  
work [2]. Lessons show that there are many cases where  
unplanned and premature closures occurred [4] and  
financial assurance is particularly helpful in such cases,  
whether in the mining industry or the oil and gas industry  
[5, 6].Therefore, selecting a financial assurance mechanism  
or a bonding approach that can ensure full restoration or  
decommissioning is crucial to the regulator. Meanwhile,  
given that bonds can restrict the operator’s operating  
capital which reduces when the deposit amount is high [7],  
choosing a bond instrument that does not discourage the  
operator’s investment and simultaneously assures their  
compliance is not less critical to any regulator. Given such  
context, this paper aims to address three key questions:  
(i) how different types of bond instruments guarantee  
fulfillment of restoration/decommissioning liability, (ii)  
Vietnam has a great potential of oil and gas resources.  
In 2017, Vietnam’s crude oil reserves were 4.4 billion  
barrels, ranking third in Asia, after China and India and  
could be enhanced in the future since the country’s waters  
were largely unexplored [8]. However, as in other regions,  
many offshore oil and gas fields in Vietnam are reaching  
the end of their productive lives [9, 10] and hence will be  
decommissioned soon. In addition, any offshore platforms  
will be eventually decommissioned. Therefore, timely  
amendment for improvement of Vietnam’s legislation on  
oil and gas decommissioning to be applied to existing  
projects and new ones is critical. With recommendations  
for Vietnam’s relevant legislation, this research contributes  
to ensuring sufficient financial guarantee funds for full oil  
1 The research uses the term “decommissioning” to refer to the process that contains all activities  
related to removing and disposing offshore platforms [1].  
2The research uses the term “restoration” to refer to the activities that repair mined land and are  
undertaken after mining operations (extraction) cease as part of the mining project.  
3The life cycle of a mine comprises eight phases: design, exploration, permitting, construction,  
operations, decommissioning/closure, post-closure and relinquishment [2]. Likewise, an oil and gas  
project life consists of six phases which are lease, exploration, development, production, closure and  
post-closure [3].  
Date of receipt: 2/7/2020. Date of review and editing: 2 - 29/7/2020.  
Date of approval: 11/6/2021.  
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PETROLEUM ECONOMICS & MANAGEMENT  
and gas decommissioning throughout the project life  
without discouraging operatorsinvestments.  
abandonment provisions), or the form of an account  
within a specified period (lease-specific abandonment  
accounts) [1, 5, 11, 14]. The followings are an overview of  
these financial assurance instruments.  
2. Methods  
This research is the continuation of the study of  
Ferreira and Suslick [1, 5, 11-13] regarding different  
bonding regimes for offshore decommissioning. Ferreira  
and his colleagues focused on evaluating the effects  
of alternative bond options on the operator’s net  
present value (or payo) and the government earnings  
in hypothetical oil-producing projects in the Brazilian  
Continental Shelf [5]. Whereas this research focuses on  
the extent to which different bond approaches can assure  
full decommissioning or restoration work to be delivered  
without discouraging the operator’s investment. This  
research also differs from Ferreira and Suslick’s study  
in terms of methodological approach. Ferreira and  
Suslick applied a financial valuation model for bonding  
approaches based on discounted cash flow and sensitivity  
analyses for the hypothetical oil-producing projects [5].  
Differently, this research compares different bonding  
mechanisms as specified in Vietnam’s legislation, Ferreira  
and Suslick’s scenarios, and the literature. The effects  
of some bonding mechanisms on operators and the  
government are contextualised in oil field X in Vietnam  
and three opencast coal mines in East Ayrshire, Scotland.  
3.1. Surety bonds  
In the context of the mining industry and the oil  
and gas industry, surety bonds are agreements among  
three parties: the operator who is required to undertake  
site restoration/decommissioning as approved by the  
government, the government who must ensure the  
accomplishment of restoration/decommissioning work  
and a surety company who guarantees the availability of  
funds for restoration/decommissioning work irrespective  
of the operator’s financial capacity [7, 15]. Surety bonds  
have been favoured by a number of mining companies  
because of the relatively small payments required [16].  
Since the surety company’s responsibility is limited  
to the insured amount, the bond value may not fully  
cover the decommissioning cost [15]. In addition, surety  
bonds are maintained by operators’ annual premiums  
[1] which are not aimed to pay for losses to the same  
level as traditional insurance premiums because in fact,  
a great amount of the premiums for surety bonds are  
underwriting fees [15]. Furthermore, unlike insurance  
policies, of which premiums are calculated to cover  
anticipated payments, surety bonds are issued based on  
credit worthiness principles: If there is higher financial  
uncertainty given the operator’s reputation, the surety  
issuer may charge a higher premium [7]. Then it is  
important that the government must precisely calculate  
the bond value and strictly monitor it during the project  
life to ensure its sufficiency for the entire restoration/  
decommissioning work. Another problem is that if the  
operator goes into liquidation, the surety company may  
not have to pay out the whole value of the bond, but they  
will never have responsibility for the exceeding value [15].  
Therefore, effective negotiations with surety company  
are essential for the government’s success in securing the  
whole bond value.  
Four types of data were collected for the research,  
comprising documentation, two informal conversations  
and a telephone conversation. Data about oil field X was  
collected between March 2019 and July 2020. Whereas  
data about three opencast coal mines in East Ayrshire,  
Scotland, were collected from March 2016 to April 2018  
as part of the data for the author’s PhD study and all such  
data were documented.  
3. Overview of bonding mechanisms  
Liability risks can be decreased by bonding  
mechanisms in respect of: (i) creating impetus for  
complying with contract requirements; (ii) indemnifying  
the government and taxpayers sensibly from failure;  
and (iii) providing environmental protection against  
possible damages due to not implementing appropriate  
closure activities [13]. Bonding mechanisms can be in  
the form similar to insurance policies (surety bonds),  
the form of an upfront fund that covers full restoration/  
decommissioning costs at the project approval stage  
(cash collateral bonds), the form of fund paid in annual  
portions during the project life (decommissioning and  
3.2. Cash collateral bonds  
Cash collateral bonds can be in the form of letters of  
credit, certificates of deposit, cash or real property and  
are the least preferred option for mining companies since  
they require huge expenditures [16]. In this mechanism,  
an amount of cash equivalent to the whole restoration/  
decommissioning cost is deposited upfront with a  
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governmental agency or to an insured bank account [1,  
14]. The interest earned from the account is either added  
to the bond value or returned to the operator [14]. The  
operator is not allowed to utilise the deposited cash to  
undertake the required work and can only receive it back  
when the work completes [1].  
abandonmentprovisions,thelease-specificabandonment  
account approach requires the operator to pay the  
decommissioning cost within four years since production  
or by the start of the year when the operator is expected  
to have produced 80% of the economically recoverable  
reserves, whichever is earlier; the first payment is  
equivalent to 50% of the total bond value [5, 12]. This  
approach only applies to the field’s producing life [12]. Like  
cash collateral bonds, this mechanism requires operators  
to use out-of-pocket funds to cover decommissioning  
activities and the deposited cash is only returned to  
operators upon completion of the required activities  
[5]. Similar to the decommissioning and abandonment  
provisions, the literature review does not show whether  
this approach has been utilised in the mining industry;  
however, it can have similar application.  
3.3. Decommissioning and abandonment provisions  
Under the decommissioning and abandonment  
provision mechanism, the total decommissioning cost is  
paid by the operator in annual portions throughout the  
field’s life cycle or producing life [1, 17, 18]. Different from  
cashcollateralbonds, thefundcollectedinthismechanism  
can be used by the operator to implement the required  
work [1]. As the name suggests, this mechanism is used  
in the oil and gas industry and although its application to  
the mining industry has not been found in the literature,  
it can be understood similarly.  
4. Results  
4.1 Surety bonds  
3.4. Lease-specific abandonment accounts  
Surety bonds are more advantageous to operators  
than cash collateral bonds in the aspect that the operators  
Different  
from  
the  
decommissioning  
and  
Figure 1. Restoration Plan B for Duncanziemere complex in 2014 [29].  
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do not have to pay for a large upfront fund [1]; if being  
calculated precisely and monitored strictly, they are more  
beneficial to regulators than the decommissioning and  
abandonment provisions because if the operators go  
bankrupt at some point in the project life, the regulators  
will be paid by the surety company for full restoration/  
decommissioning work. Experience from Dunstonhill  
Surface Mine (Dunstonhill), Duncanziemere Surface  
Mine (Duncanziemere) and Netherton Surface Mine  
(Netherton) - three opencast coal mines in East Ayrshire,  
Scotland, showed that calculating and monitoring surety  
bonds are critical.  
work [27]. Especially, the Council’s lack of monitoring led  
to the bond for Duncanziemere having expired without  
being replaced by Aardvark [28] and it became unsecured  
due to not having been called in by the Council before its  
expiry [29].  
The cases of Dunstonhill and Netherton also showed  
negotiations with bond providers are crucial for securing  
bond values. After the liquidation of Scottish Coal and  
Aardvark, East Ayrshire Council had a lot of challenges in  
this regard. In relation to Netherton, the bond provider  
made the final offer of GBP 3.96 million, equivalent to 88%  
of the maximum value of the bond after some negotiations  
with the Council [30]. Regarding Dunstonhill, given the  
potential decreases of the restoration bond values, the  
Council managed to call in the bond prior to the expiry  
dates [31]. The first bond call was repudiated by the bond  
provider who, after the second call, only agreed to present  
a cumulative offer of GBP 6 million for Dunstonhill and  
Ponesk (another opencast coal site in East Ayrshire - the  
author) [32, 33]. This means the original bond value for  
Dunstonhill was reduced by GBP 1.2 million.  
Dunstonhill, Duncanziemere and Netherton were  
operated by Scottish Coal (Dunstonhill) and Aardvark  
(Duncanziemere and Netherton) after being granted  
planning permissions on 29 March 2010, 30 March 2011  
and 19 October 2010 respectively [19 - 21]. Nevertheless,  
Scottish Coal went into liquidation on 19 April 2013 and  
the same situation happened to Aardvark on 16 May  
2013 [22]. In order to be granted planning permissions  
for the sites, the mining companies were required to  
lodge restoration and aftercare bonds at the planning  
stage to ensure fulfilment of the restoration and aftercare  
obligations as specified in the Section 75 Agreements  
[20 - 22]. Those restoration and aftercare bonds are  
surety bonds [23 - 26]. Dunstonhill was provided with  
a restoration bond valued at GBP 4.2 million and an  
aftercare bond worth GBP 0.377 million [22] whereas  
Duncanziemere and Netherton were granted restoration  
bonds of GBP 2.6 million and GBP 4.5 million respectively  
[21, 22]. However, at the time of the operatorsliquidation,  
the estimated costs for restoring the sites according to the  
original restoration plans would be GBP 10.241 million,  
GBP 6.593 million, and GBP 11.811 million respectively  
[22]. Those wide gaps between the bond values and the  
restoration costs were caused by East Ayrshire Council’s  
failures in calculating and monitoring the bonds at the  
planning stage and during the operations phase [27].  
For example, the schedule of restoration and aftercare  
liabilities for Dunstonhill related the bond quantum  
to specific time periods [23]. However, no compliance  
monitoring was executed after the signing of the Section  
75 Agreement, particularly by an independent mining  
engineer (who should be appointed by the Council) to  
guarantee the operational and restoration works on site  
were pursuant to the approved scheme and hence could  
make any necessary adjustment to the bond quantum  
for sufficient coverage of the outstanding restoration  
4.2 Decommissioning and abandonment provisions  
The financial assurance instrument currently applied  
to the oil and gas industry in Vietnam can be categorised  
as decommissioning and abandonment provision.  
Particularly, oil operators in Vietnam shall, within one year  
since the production of the first oil and gas flow, establish  
a financial guarantee fund to which annual payments  
shall be made according to the previous formula:  
The production within the year  
× (Total decommissioning cost  
– The paid balance)  
[34]  
Payment level =  
Remaining recoverable reserves  
or the present formula:  
̻ × (̼ ̽  
̓  
)
͢
͢
(͢ - 1)  
(͢ - 1)  
̿ =  
͢
̾
͢
in which:  
- En: The level of payment in the year n; the calcula-  
tion unit is USD.  
- An: The production in the year n, defined by the ac-  
tual production in the respective year; the calculation unit  
is barrel of oil equivalent.  
- Bn: The total decommissioning cost updated in the  
year n, Bn = (b1 - b2), in which:  
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+ b1: The total decommissioning cost estimated in  
the (most recently approved) decommissioning plan; the  
calculation unit is USD.  
transfer part of the fund to the operator for undertaking  
decommissioning activities if being called during the  
project life [35]. If the decommissioning work is not  
implemented wholly or partially by the operator, PVN can  
use the fund for fulfilling the work [34, 35].  
+ b2: The cost estimate defined in the (most recently  
approved) decommissioning plan corresponding to the  
equipment, property or structure decommissioned up to  
the year (n-1); the calculation unit is USD.  
4.3 Cash collateral bonds  
Compared to surety bonds and decommissioning and  
abandonment provisions, cash collateral bonds are likely  
the most reliable approach to ensure full restoration/  
decommissioning work to be undertaken. This is because  
operatorshavetodepositanamountofmoneyequaltofull  
restoration/decommissioning cost in an escrow account  
in advance and the government completely controls such  
account until the bond is released after the completion of  
the required operations [1]. This was probably the reason  
why East Ayrshire Council chose this bonding approach  
for Duncanziemere after the liquidation of the previous  
operator. Particularly, the Council approved another  
mining company to extract the remaining coal and  
restore the site to a revised restoration plan but required  
such mining company to deposit in advance a sufficient  
amount of money into an escrow account which would be  
used if they did not fulfil the task [29].  
- C(n-1): The balance of the financial guarantee fund  
on December 31st of the year (n-1), defined by the total  
balance of all the bank accounts to which PVN sends the  
financial guarantee fund of the respective field, and certi-  
fied in writing by the relevant commercial banks; the cal-  
culation unit is USD.  
- I(n-1): The profit from the savings accounts received  
by organisations and individuals after PVN, on behalf of  
them, fulfils all the duties to the national budget (if any)  
for the year (n-1).  
- Dn: The remaining recoverable reserves, Dn = d1 - d2,  
in which:  
+ d1: The recoverable reserves defined in the  
economic development plan or the early production plan  
already approved by authorities up to the end of the year  
n; the calculation unit is barrel of oil equivalent.  
However, the problem of cash collateral bonds  
is that the operators have to pay in advance (prior to  
extraction/production) for an upfront fund which covers  
the whole restoration/decommissioning work and cannot  
be used by the operators for implementing restoration/  
decommissioning activities. This means the operators  
must pay double for restoration/decommissioning  
activities during the project life, which requires large  
capital and is not attractive to investors. Investments from  
large companies like mining ones are important for the  
local and regional areas. For example, the development  
at Dunstonhill would create totally 276 jobs including  
indirect jobs through offering or retaining about 120 jobs  
for directly employed staff and continuing support for  
local businesses [36]. The development at Duncanziemere  
would provide 36 jobs and sustain indirect employment  
in supplying mechanical, engineering and fleet services to  
opencast sites [37]. Meanwhile, Netherton would provide  
or retain about 110 direct jobs [38] and support indirect  
employment for local subcontractors, trades and small  
businesses related to the site operations and coal haulage  
[40]. In fact, all the mines are located in rural areas where  
the unemployment rates were high [37, 38, 40 - 42] and  
most of the employees were expected to reside within  
+ d2: The total production accumulated from the  
relevant field(s) up to the year (n-1); the calculation unit is  
barrel of oil equivalent [35].  
Following the above-mentioned formulas, operators  
only deposit in the financial guarantee fund part of the  
decommissioning cost during the project life. This could  
lead to financial burdens on taxpayers if the operators go  
into liquidation [1]. Therefore, the mechanism does not  
ensure the compliance [1] as the operators may choose  
to liquidate at some point of the project to avoid the  
remaining financial liability if the field production does  
not compensate for the decommissioning cost.  
Slightly different from the Brazilian hypothetical  
cases where no interest would be earned from the fund  
[1], pursuant to Vietnam’s legislation, interest will be  
earned and added to the fund after all financial duties  
to the Government of Vietnam have been fulfilled  
[34, 35]. This helps reduce the financial burden on  
the operator as their actual total payment is less than  
the total decommissioning cost. Particularly, PVN will  
deposit the fund in a separate interest-bearing account  
in a stable credit institution in Vietnam [34, 35]. PVN will  
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15 kilometres of the site or within East Ayrshire [36, 37,  
39]. Therefore, such job provision was considered to  
contribute substantially to the local economies [37, 38,  
43, 44]. Likewise, the oil and gas industry can play an  
important role in the economic development of a region  
or even a nation. Tremendous investment activities in oil  
and gas exploration and production have madeVungTau -  
the oil and gas hub of Vietnam - become a prosperous city  
and contribute significantly to the nation’s economy [45].  
Between 2006 and 2015, PVN made an average annual  
contribution of 20 - 25% of the total national budget and  
18 - 25% of the GDP [46]. Since 2015, despite facing many  
difficulties, PVN has still contributed about 9 - 11% of the  
total national budget and 10 - 13% of the GDP annually  
[46].  
the decommissioning and abandonment provision and  
surety bond options, it is less advantageous. If the project  
lasts 10 years, their annual payments to the fund are  
spread over the project life in the former and thus the  
total payment within 4 years is much less than the total  
decommissioning cost; whereas their annual premiums  
for 4 years to maintain the bond in the latter are even  
much lower than the total decommissioning cost4.  
5. Discussion  
Given the problems associated with surety bonds, the  
author does not recommend this approach to oil and gas  
decommissioning in Vietnam. Surety bonds only serve as  
a form of financial guarantee and operators still have to  
pay for their restoration/decommissioning activities on  
their own [1]. If the operator is solvent to complete the  
task, the bond will be released and the premium payment  
will be terminated. On the contrary, the bond issuer will  
finance restoration/decommissioning activities [1]. This  
explains firms’ choice of going into liquidation when  
seeing that they would not be able to produce adequate  
profits to fund the required work like the cases of Scottish  
Coal and Aardvark in East Ayrshire, Scotland in 2013. In  
addition, the bond issuer will not have to pay the whole  
bond value and the experiences in East Ayrshire show that  
negotiations with bond issuers to reclaim the maximum  
bond value is very challenging.  
4.4 Lease-specific abandonment accounts  
Another approach mentioned by Ferreira and Suslick  
[5] that has not been applied in the oil and gas industry  
in Vietnam and the mining industry in Scotland is lease-  
specific abandonment account. This approach seems to  
be beneficial to both regulators and operators.  
For regulators, it is assured that, by the end of the  
maximum 4-year period since production, they have held  
the fund that can cover all required decommissioning  
activities. It is safer than the decommissioning and  
abandonment provision approach if the production lasts  
more than 4 years and much safer than surety bonds  
though a bit riskier than cash collateral bonds. Although  
there may be cases where the operator is insolvent before  
the fourth year, the regulator is assured to have held at  
least half of the total decommissioning cost from the  
initial payment, which, following Vietnam’s legislation,  
must be fulfilled within one year since the first oil and gas  
production [34, 35] instead of an undefined date within  
4-year time in the Brazilian hypothetical context [5].  
Again, this approach is safer than the decommissioning  
and abandonment provision if the production lasts more  
than 2 years, much safer than surety bonds and safe by  
half of the cash collateral bond mechanism.  
The cases of opencast coal mines in East Ayrshire  
also showed what mining companies would do to avoid  
restoration liabilities. After the liquidation of Aardvark,  
two companies namely OCCW (Duncanziemere) Limited  
and OCCW (Netherton) Limited, which were actually  
hived down from the interest of Aardvark, were set up  
to continue coaling operations at Duncanziemere and  
Netherton and undertake the remaining restoration  
liabilities [47]. It should be noted that these liabilities  
addressed the revised restoration schemes only, which  
are at lower levels than the original ones [21, 29]. The  
situation seems to be similar in the oil and gas industry  
because small spurious firms can be set up from big  
ones to circumvent decommissioning obligations if no  
stringent financial guarantee regime is in place [5].  
For operators, this mechanism is more advantageous  
than the cash collateral bond approach in the aspect  
that their initial payment does not have to cover the  
whole decommissioning cost. However, compared to  
As  
aforementioned,  
the  
decommissioning  
and abandonment provision approach has been  
4This comparison only considers annual premiums of which the rates in the offshore surety industry are often between 1 and 3% but can be up to 5% of the covered loss [15]. There might be cases where opera-  
tors also have to collateralise 100% of the bond to keep the bond in place [15].  
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applied to decommissioning of oil and gas projects  
in Vietnam. This approach is more advantageous to  
operators than cash collateral bonds and lease-specific  
abandonment accounts in the aspect that they can pay  
the decommissioning fund in annual portions over the  
project’s or the field’s lifetime. For regulators, while this  
approach can avoid the issues associated with securing  
bond money if the operators go into liquidation under the  
surety bond option, it does not ensure compliance of full  
financial liability until the end of the project as mentioned  
earlier. In the case of oil field X developed by Truong Son  
Joint Operating Company (Truong Son JOC) from 24  
November 2008 and then by Petrovietnam Exploration  
Production Corporation (PVEP) since 24 November  
2013 [48, 49], the financial liability was entirely fulfilled  
by the previous operator. Particularly, Truong Son JOC,  
before handing over the field in 2013, had revaluated the  
financial guarantee fund and added to the fund to ensure  
its adequacy for decommissioning operations, given  
the early cessation of the Production Sharing Contract5.  
Doing this way, Truong Son JOC complied with Article 20  
of Decision 40/2007/QD-TTg which requires that within  
one year before the end of the petroleum contract or the  
expiry of the petroleum production period, operators  
must recalculate the financial guarantee fund and must  
add to the fund if it is not sufficient for decommissioning  
[34]. While in Vietnam so far there have never been cases  
of oil companies liquidating to avoid decommissioning  
liability and apart from laws, there would be contractual  
terms binding operators’ liability, the potential deficiency  
of decommissioning funds during the project life under  
this bonding mechanism should be paid attention to  
by Vietnamese regulators. Additionally, since the fund  
deposited by the operator during the project life will be  
managed by PVN [34, 35], administrative issues will arise  
and need to be handled by the Group diligently.  
unnecessaryorunusedforfuturepetroleumactivitiesmust  
be decommissioned within this phase and the operators  
do not have to pay for a financial guarantee fund in such  
cases [35]. In addition, requiring the operators to pay for  
the financial guarantee fund within one year since the first  
oil and gas production is more attractive to investors since  
it gives them more time to accumulate profits from the  
project. However, there is a risk of noncompliance if the  
operators liquidate just within this period.  
Similar to the decommissioning and abandonment  
provisions, if the cash collateral bond approach is applied  
to oil and gas decommissioning in Vietnam, it can be  
amended such that the upfront funds can be used by  
the operators to implement decommissioning activities  
during the project life upon calling PVN. Moreover, interest  
earnings from the upfront fund should be returned to the  
operator annually like in the Brazilian cases [1] to support  
its capital needs. These help reduce financial burdens  
on the operator and thus also attract more investment.  
Again, since the upfront fund will be managed by PVN  
in Vietnamese cases [34, 35], administrative issues will  
arise and need to be resolved diligently by the Group.  
Furthermore, compliance monitoring must be undertaken  
stringently by the Government in collaboration with PVN  
to ensure the money withdrawn from the upfront fund  
equates to the decommissioning work caried out by the  
operator on site.  
Whereas, likecashcollateralbonds, ifthelease-specific  
abandonment account approach is applied to oil and gas  
decommissioning in Vietnam, it can be amended so as the  
money in the account can be utilised by the operator to  
undertake the decommissioning work during the project  
process upon calling PVN. Also, interest earnings from the  
account can be returned to the operator yearly like in the  
Brazilian cases [5] to support its capital needs. These will  
also help attract more investment from the operators.  
Again, similar to the decommissioning and abandonment  
provision and cash collateral bond options, the account  
will be managed by PVN in Vietnamese cases [34, 35],  
therefore, the Group needs to be diligent in dealing  
with administrative issues arising. Also, the Government  
in collaboration with PVN must have strict compliance  
monitoring to make sure the money withdrawn from the  
account corresponding to the decommissioning work  
implemented by the operator on site.  
Regarding cash collateral bonds, while the upfront  
fund shall be paid by the operator prior to coal extraction  
or oil and gas production as in the Scottish and Brazilian  
cases respectively, it can be paid within one year since  
the production of the first oil and gas flow following  
Vietnam’s legislation for the timing of establishing the  
financial guarantee fund [34, 35]. This is quite sensible  
to regulators because under the current law, projects  
which are determined during the exploration phase to be  
5The production of the field X should have been ceased when Truong Son JOC terminated the Production Sharing Contract; however, PVEP, on behalf of PVN which was assigned by the Government of Vietnam,  
continued the operations of the field in order to maximise the oil extraction and thus does not have financial liability for the field decommissioning.  
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PETROLEUM ECONOMICS & MANAGEMENT  
Figure 2. Large flooded hole with steep wall at Dunstonhill opencast coal mine in April 2013 after being abandoned.  
So how about the existing oil and gas projects in  
Vietnam that have been operated for more than 10 or  
20 years? Since the decommissioning and abandonment  
provision approach has been applied to them, the  
government in collaboration with PVN needs to check  
the balance of the financial guarantee fund for each  
project and monitors the site to assess the outstanding  
decommissioning liability. If the fund is inadequate for  
undertaking the outstanding work, the operator must  
add to the fund immediately or as soon as possible.  
This is especially important for projects executed via  
joint ventures or production sharing contracts between  
PVN and international firms since the latter may go into  
liquidation at any time. It is not only reasonable but also  
fair because the projects have lasted more than 10 or 20  
years, bringing certain profits to the operators from oil  
sales.  
6. Conclusions  
The comparison of different bonding instruments  
with practices from the oil and gas industry in Vietnam  
and the opencast coal mining industry in Scotland shows  
the outbalance of each instrument to the government  
and the operators.  
Cash collateral bonds are most advantageous to the  
government since they ensure the site is fully restored  
or decommissioned. Contrarily, this option is least  
advantageous to operators who have to make double  
payment for the restoration/decommissioning cost  
during the project life.  
The second choice for the government should be the  
lease-specific abandonment account option because by  
the end of the fourth year, the government will have held  
the fund that can cover the total decommissioning cost.  
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For the operator, lease-specific abandonment accounts  
are more favourable than cash collateral bonds because  
the initial payment is equivalent to only half of the  
restoration/decommissioning cost.  
the decommissioning and abandonment provision  
approach.  
If the afore-mentioned bond instruments are applied  
to oil and gas decommissioning in Vietnam, some  
amendments need to be considered. Cash collateral  
bonds and lease-specific abandonment accounts will  
become more advantageous to the operator if the  
upfront fund in the former and the money in the account  
in the latter can be used by the operator to carry out  
decommissioning activities during the project and any  
interest earnings can be returned to the operator annually  
to support its capital needs. In addition, the upfront fund  
for cash collateral bonds and the initial payment for  
lease-specific abandonment accounts can be deposited  
within one year since the production of the first oil and  
gas. Regarding the decommissioning and abandonment  
provision approach which has been applied to oil and gas  
decommissioning in Vietnam, the Government should be  
cautious of the potential deficiency of decommissioning  
funds if operators go into liquidation at some point within  
the project life. For all those types of bond instruments,  
the Government in collaboration with PVN needs to  
monitor operators’ compliance stringently to ensure the  
money withdrawn from the financial guarantee fund  
is equivalent to the decommissioning work execution.  
Furthermore, as the manager of the financial guarantee  
fund, PVN needs to deal with any arising administrative  
issues diligently.  
The third desirable option for the government should  
be decommissioning and abandonment provisions.  
Getting annual moneys until the year when the operator  
goes in liquidation (if this is the case), it is more reliable  
for the government than the surety bond option in which  
they need to calculate the bond quantum precisely  
and monitor carefully throughout the project phases to  
ensure the bond money is adequate for the remaining  
restoration/decommissioning liability. The operator  
is more advantageous with this option than with the  
cash collateral bonds and lease-specific abandonment  
accounts since they can pay the decommissioning fund  
in annual portions over the whole project life or the field’s  
producing life.  
Among the four options, surety bonds are least  
reliable to the government due to issues associated with  
bond securing while the operator may not undertake  
the required restoration/decommissioning during the  
project life and go into liquidation near the end of  
the project to avoid using their out-of-pocket funds in  
addition to the annual premiums to maintain the bond to  
cover restoration/decommissioning activities. However,  
if the government is successful in bond securing, they are  
more advantageous than under the decommissioning  
and abandonment provision approach due to being  
paid by the surety company for the exact outstanding  
restoration/decommissioning liability in case the  
operator becomes insolvent at some point of the project  
life. On the contrary, the operator is most advantageous  
under this approach. Clearly, with this approach,  
the operator does not have to pay either an upfront  
fund equal to the total restoration/decommissioning  
cost like with the cash collateral bonds or payments  
equating to the total restoration/decommissioning cost  
within four years or an initial payment equivalent to  
half of the restoration/decommissioning cost like with  
the lease-specific abandonment accounts. If the project  
lasts more than 10 years and the operator chooses  
to liquidate just after the fourth year of production/  
extraction, the annual premiums to keep the bond in  
place within four years are much lower than the annual  
payments out of the total restoration/decommissioning  
cost and thus the operator is more beneficial than with  
Acknowledgement  
This work was funded by Petrovietnam University  
under grant code GV1903.  
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