Novel Approach to More Effective Plug and Abandonment Cementing Techniques

Ferg, Thomas Eugene; Lund, Hans-Jacob; Mueller, Dan; Myhre, Morten; Larsen, Arne G.; Andersen, Patrick; Lende, Gunnar; Hudson, Charles Edwin; Prestegaard, Cato; Field, D.

doi:10.2118/148640-ms

Cited by 15 publications

(3 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The perforate wash and clean method of cement placement for permanent abandonment involves perforation of the uncemented casing, washing of the annular space, and mechanically placing the cement across the wellbore crosssection in a single run (Ferg et al, 2011).…”

Section: Summary Of Current Panda Technologies and Their Evaluationmentioning

confidence: 99%

A Review of Past, Present, and Future Technologies for Permanent Plugging and Abandonment of Wellbores and Restoration of Subsurface Geologic Barriers

Achang

Radonjic

2020

Environmental Engineering Science

View full text Add to dashboard Cite

Leakage of oil & gas during fossil fuel exploration, production, and transportation poses a major environmental challenge that impacts the quality of air, water, soil, and ultimately the life on Earth. The result of uncontrolled spills & leakages may cause the contamination of groundwater as well as methane emission into the atmosphere increasing global warming, while the spills in open waters in the case of offshore wellbores impact fragile marine ecosystems. The United States alone has *1.7 million wellbores with an American Petroleum Institute (API) number indicating that they have not been permanently plugged and therefore require Plugging and Abandonment (P&A) in the future. However, there remain thousands of wells drilled before the 1950s that were not properly P&A.Improper P&A of boreholes are potential pathways for leakage as well as already existing leaky plugs. The objective of this literature review is to (1) assess subsurface conditions where P&A materials need to be placed, (2) assess the challenges encountered during barrier placement in wellbores under current P&A technologies, (3) appraise contaminations of barrier materials by drilling fluid and possible mitigation, and (4) discuss the future requirements of P&A materials and technology involved in restoring subsurface sealing barriers interrupted by drilling. The review indicates that to achieve permanent P&A in the future, two major challenges must be addressed: (1) innovation & improvement of the barrier materials, and (2) advancements and innovation of the placement methods. The major insight from this article is that re-establishment of a permanent seal capable of withstanding subsurface geomechanical and geochemical changes will involve engineered materials and processes providing sealing in the early stages (1-50 years) and geomaterials and geological processes take over and provide permanent seals, for thousands of years to geological times. Thus no single solution can be successful for future P&A campaigns.

show abstract

Section: Summary Of Current Panda Technologies and Their Evaluationmentioning

confidence: 99%

A Review of Past, Present, and Future Technologies for Permanent Plugging and Abandonment of Wellbores and Restoration of Subsurface Geologic Barriers

Achang

Radonjic

2020

Environmental Engineering Science

View full text Add to dashboard Cite

show abstract

“…8.4, and the gun is either left in hole or retrieved. In the next step, a washing tool is Run in Hole (RIH) and washes the annular space behind the perforated casing to remove the debris, settled mud and mud film [6,7]. The washing process is carried out downward and a several times to obtain fresh formation.…”

Section: Concept Behind the Techniquementioning

confidence: 99%

Tools and Techniques for Plug and Abandonment

Khalifeh¹,

Saasen²

2020

Ocean Engineering &Amp; Oceanography

View full text Add to dashboard Cite

In permanent P&A, establishment of a rock-to-rock barrier is a requirement. There are situations where the annular barrier behind casing is not qualified or there is no annular barrier. Therefore, full access to the formation shall be obtained. Different techniques have been utilized by the petroleum industry such as cut-and-pull, casing milling, and section milling. Some new techniques have been suggested some of which are in use and others are in development. Such techniques include perforatewash-cement, upward section milling, melting downhole completion, and plasmabased milling. This chapter will present these techniques, briefly.

show abstract

“…If interpretation of logging data shows poor quality casing cement or lack of casing cement, then section milling or perforate, wash and cement technology can be applied respectively (Ferg et al 2011). It should be noted that current logging technology is not able to log through multiple casings (Statoil 2013).…”

Section: Plug and Abandonment Proceduresmentioning

confidence: 99%

Essential Aspects in Probabilistic Cost and Duration Forecasting for Subsea Multi-well Abandonment: Simplicity, Industrial Applicability and Accuracy

et al. 2015

View full text Add to dashboard Cite

There are a large number of subsea fields on the Norwegian Continental Shelf approaching the end of their lifetime and, hence, require to be abandoned. In order to improve cost efficiency, a combination of rig-based and rigless technologies will be employed to accomplish distinct phases for subsea well abandonment. A correct picture of expenditures and duration for the field abandonment is an important aspect in budgetary planning for every company.Although the probabilistic approach has become a standard method compared to the deterministic approach for time and cost forecasting, complexity of the probabilistic approach compared to the deterministic method might still be a hindrance for using this approach. In this paper, a simple excel-based program is developed for probabilistic cost and time estimation of subsea multi-well abandonment. This model is aimed to provide an applicable and simple means for industry to estimate cost and time of subsea well abandonment. The structure of this program is based on the Oil and Gas UK Guideline on well abandonment cost estimation. This is presented in a way capable of being replicated easily. In addition a summary of vessel based technologies available for subsea well abandonment together with a brief description of operation sequences for well abandonment are presented.The inclusion of dependencies into cost and time forecasting model is a challenging issue which needs to be addressed in order to achieve a correct picture of possible outcomes. In the second section of this paper, different approaches to address dependencies among different operations are also investigated together with a comparison and a discussion on the benefits and the disadvantages associated with each approach. This will be implemented for a case example wherein different rigless technologies are utilized to complete multi-well abandonment.

show abstract

Novel Approach to More Effective Plug and Abandonment Cementing Techniques

Cited by 15 publications

References 2 publications

A Review of Past, Present, and Future Technologies for Permanent Plugging and Abandonment of Wellbores and Restoration of Subsurface Geologic Barriers

A Review of Past, Present, and Future Technologies for Permanent Plugging and Abandonment of Wellbores and Restoration of Subsurface Geologic Barriers

Tools and Techniques for Plug and Abandonment

Essential Aspects in Probabilistic Cost and Duration Forecasting for Subsea Multi-well Abandonment: Simplicity, Industrial Applicability and Accuracy

Contact Info

Product

Resources

About