Well Integrity

Well integrity is concerned with the safe and reliable containment of all well fluids throughout the life of a well, including after decommissioning.


Managing well integrity is a global challenge. Statistics collected during the past few years from three independent sources* revealed well integrity failures in 45 percent, 34 percent and 18 percent of wells in the Gulf of Mexico, UK North Sea and the Norwegian North Sea, respectively.

In line with our mandate to deliver better wells, we have assembled a range of technologies designed to combat this serious challenge, to extend well life, maximize well performance and minimize environmental impact. Our well integrity portfolio addresses three key challenges: annulus integrity, well suspension and integrity diagnostics.

For secure well suspension, our plugs are rapid to set and seal, easy to move and reset. The result: high efficiency and low cost.

Archer’s LOCK™ series of well barrier plugs are retrievable, resettable and V0 rated under ISO 14310, which demands gas tight isolation with zero leakage. No drill pipe is needed below the plug, so installation is easier and faster. Proven in over 2,000 deployments and based on Peak VMB technology, LOCK™ plugs provide an absolute seal for temporary suspension or permanent abandonment, providing operators flexibility, reliability and far greater security.

During well construction, Cflex® technology provides a gas tight solution for precision primary or contingency staged cementing. Unprecedented flexibility is offered through multiple open and close valve technology and includes the option to install in one or more casing or liner sections. Certified “gas tight” under ISO 14310 V0, and with a two-stage permanent lock system, Cflex® performs to the highest integrity standards. Installing Cflex™ gives operators flexibility, reliability and far greater confidence in cementing operations.

Revealing the precise location of integrity failures in wells is also one of our foremost specialisations. Powerful integrity diagnostics begin with knowing that a failure has occurred, then finding it efficiently, accurately and completely. Only then can effective decisions and remedial action be taken. Conventional techniques provide clues, but operators need to know that their interventions will produce reliable and unambiguous answers that enable critical decisions to be made with confidence and precision.

The Point® system from Archer satisfies this need. The result of our passion for innovation and integrity technology, the Point system is an industry icon. Deployed proactively and systematically at surface and downhole, it combines conventional and unique measurements with expert assessment and analysis to evaluate barrier performance and expose the precise location of leaks and flowpaths throughout the well system—without pulling the completion string. Underpinning the Point system is our deep understanding of integrity dynamics, built over decades of diagnosing integrity failures globally.

*Minerals Management Service, USA 2004; SPE forum North Sea Well Integrity, 2009; Norwegian Petroleum Safety Authority, Well Integrity study, 2006

Unconventional Hydrocarbons

The production of unconventional shale basins is one the most significant developments in the energy industry.

Shale formations can contain large amounts of hydrocarbons trapped in extremely low permeable layers of rock that were once considered inaccessible or uneconomical by conventional methods and technology.

With the advancement of new technology and innovative processes, the industry and the world now have access to large recoverable oil and gas reserves that can be drilled and hydraulically fractured. These unconventional resources give growing industries and economies the natural resources capable of powering us into the future.

Archer specializes in horizontal and vertical wellbore stimulation; utilizing high pressure, high rate hydraulic fracturing services, cased-hole wireline, pressurized fluid pumping, coiled tubing and rig assist snubbing, providing operators improved access to proven resources and therefore increasing their well value.

In addition to these services, we contribute to the extraction of hydrocarbons from shale with our industry leading AWC frac valves. AWC, part of Archer, manufactures and supplies high integrity gate valves for safe and efficient hydraulic fracturing.

Through these specialized services, we maximize production by allowing more efficient access to the wellbore and ensure delivery of highly productive, safe and reliable wells.

Decommissioning

A large number of oil and gas assets are coming to the end of their designed life expectancy and need to be decommissioned safely, securely and cost effectively.

Operators and regulators’ wells need to be decommissioned in such a way to ensure zero risk of post-abandonment integrity failures. In addition, a decommissioned well will not generate any returns for the operator, so plug and abandonment operations need to be conducted in the most cost-effective manner, while at the same time ensuring a safe and long-lasting solution. 
We believe that the delivery of safe, efficient and cost-effective abandonment can be achieved through a combination of experience coupled with innovation and technology — this is what sets Archer apart. 

With respect to efficient and cost-effective execution, our “Archer Emerald” and “Archer Topaz” modular rig technology combine state-of-the-art drilling and workover capability in a compact modular package. It can be mobilized to fixed installations to conduct a varied range of operations, including well decommissioning. This approach alleviates the need for the operator to invest in infrastructure upgrades and brings all the advantages of the latest generation drilling and workover equipment.

When it comes to evaluating the integrity status of a well prior to permanent abandonment, our Point diagnostic system offers the industry’s most effective means of locating integrity failures, thereby enabling targeted remedial action prior to final abandonment. The same technology can also be used to validate the success of any remediation prior to permanent abandonment.

To safely close down a well, an effective barrier must be put in place to isolate reservoir fluids. Our LOCK™ series of well barrier plugs are V0 rated under ISO 14310, which demands gas tight isolation with zero leakage. Proven in over 1,000 deployments, and based on Peak VMB technology, the LOCK™ series provides an absolute seal for permanent abandonment without the use of cement.

By combining these technologies with experienced engineering and platform drilling teams, we are able to offer integrated plug and abandonment services to customers giving them the ability to reduce their interfaces with contractors. We already provide customers with a number of service elements including swarf management, cuttings re-injection (CRI), casing pulling services, tubulars and handling equipment and we are committed to continually growing our business and serving as a dedicated provider of all plug and abandonment and decommissioning services.