... such as Vacuum-Insulated-Tubing (VIT), insulating fluids including nitrogen, conventional and foamed cements and syntactic foam as well as the variation in the earth formation. Water is used as a demonstration working fluid and the full spectrum of fluid behavior for all potential phase and quality regimes...

... During pre-planning for the well and while considering various offshore drilling rig options, the operator evaluated several technical solutions to address 22″ surface casing cement job concerns and promote operational efficiency. Novel cementing system One of the technical solutions...

... Abstract Diagenetic nodular anhydrite observed in fluvio-aeolian-lacustrine and glacial sandstones has significant implications to reservoir quality. This type of nodular cement is spatially and volumetrically variable within these reservoirs. Its presence impacts subsurface formation...

... The novel cement detection technology was adapted from a proppant detection technology that has been successfully deployed in hydraulic fracture treatments across the globe ( Bartko 2013 , Casero 2020 , Duenckel 2011 , Perfetto 2013 , Pooniwala 2018 , Torres 2012 ). This technology has...

... It must be noted that in the vicinity of casing couplings (collars) the cement clearance will become smaller, hence CC = (A-WB)/2 where WB is the coupling diameter. In particular, the lean-wellbore concept requires the use of flush connections as well as non common casing sizes such as 9 7/8...

... Abstract Accurate characterization of oilwell cement mechanical properties is a prerequisite for maintaining long-term wellbore integrity. The drawback of the most widely used technique is unable to measure the mechanical property under in situ curing environment. We developed a high pressure...

... Abstract Ensuring wells’ cement mechanical integrity (CMI) is of paramount importance for the success of a thermal project. Failed cement sheaths can lead to loss of production, environmental pollutions, or even to well abandonment. Over time, CMI software applications have been developed...

... Abstract There are advantages to using high performance lightweight cement when encountering low bottomhole pressures. The most notable are maintaining wellbore stability during cement placement and the isolation of potential flow zones to achieve the wellbore construction objectives. Several...

... The generally overlooked implications of intentional or unintentional overdisplacement of shoe track cement in production casings, resulting in what is commonly known as a wet shoe, are discussed in addition to how these implications/risks have been addressed and mitigated with recent developments in float...

... Characterization Upstream Oil & Gas cement complex reservoir outcrop shale gas quartz subsurface sample kerogen white arrow calcite cement reservoir sample Texas permeability kaolinite organic matter mineral calcite BSE image matrix lef reservoir sample Introduction The rise...

... Abstract A major operator on the Caspian Turkmen shelf has started to encounter sustained casing pressures (SCP) attributable to insufficient isolation across a hydrocarbon gas zone, due to downhole stresses and other contributing factors. Enhanced placement techniques of conventional cements...

... is due to corrosive water flow from shallow aquifer formation. Therefore, an immediate remedial action is required to improve well construction. A successful worked over well with integrity issue as a casing leak was repaired by cement squeeze into across the corroded casing interval, which enhanced...

... with the formation. In recent years, operators have been drilling larger holes, deploying gauge systems on the exterior of the casing, and cementing the gauge systems in place for multiple purposes. In artificial lift applications, cemented gauge systems have helped operators to avoid costs of decompleting...

... circulation scenarios and the need to tackle all of these problems with a cost-effective strategy. It is also not uncommon to have a two-stage cementing in long intermediate jobs due to the low fracturing gradients and the losses encountered during drilling. This type of job design is also seen even at very...

... Abstract Results from a long-term field study to improve zonal isolation show that rotating production casing in unconventional well laterals is possible and that it delivers excellent cement quality. This paper reports the results of the study. To date, 44 production strings have been rotated...

... Abstract Wellbore cementing is critical for zonal isolation, bonding and supporting the casing downhole. In this paper, a novel high-performance micromaterial is presented for significantly improving the quality of the cement slurry and set cement tested in different API cements for horizontal...

... Abstract Annular gas migration through micro-annuli in cement, or casing vent flow, is a common issue over the life of a well. This results from poor cement jobs or porous cement that cannot successfully prevent gas flow from creating channels while curing. Remediating this through traditional...

... requiring additional work before perforating, located above the top packer (i.e., cement packer candidates) Cement Packer Candidates Numerous potential candidates were identified for the cement packer technique. Because every well had to be drilled through those minor reservoirs, the following...

... Abstract The Perforate, Wash and Cement technique has been widely applied to remediation of annular cement in recent years. Since 2012, extensive experience in the different technologies currently available on the market has been obtained across ten fields in the Danish and UK sectors...

..., casing drilling operations are becoming more common in the GSJ area. In casing drilling, the well is drilled attaching a drilling bit at the end of the casing, which is cemented in place after reaching total depth (TD). The formation is never exposed to OH, and the only way to acquire information...