Real-Time Quality Control of Foamed Cement Jobs: A Case Study

Thayer, R.D.; Ford, D.G.; Holekamp, Steve; Pferdehirt, D.J.

doi:10.2523/26575-ms

Cited by 3 publications

(2 citation statements)

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“…Foamed cements are low-density cement systems used in formations unable to support the annular hydrostatic pressure of conventional cement slurries (Nelson, 2006;Harlan et al, 2001). The use of foamed cement for its lightweight density is well documented in literature (Benge & Poole, 2005;Harlan et al, 2001;White et al, 2000;Kopp et al, 2000;Frisch et al, 1999;Benge et al, 1996;Thayer et al, 1993;Harms & Febus, 1985). In some cases, foamed cement is used to modify mechanical parameters of the resulting slurry.…”

Section: Introductionmentioning

confidence: 99%

Assessment of Foamed Cement Used in Deep Offshore Wells

Kutchko

Crandall

Moore

et al. 2014

Day 1 Wed, September 10, 2014

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The use of foamed cement systems for deepwater applications has been increasing and is often the system of choice for shallow hazard mitigation as in the Gulf of Mexico. However, there is little information regarding foamed cement behavior under wellbore conditions. Research is being conducted to develop a predictive relationship between the mesostructure and physical properties of foamed cements used in offshore applications. Samples of foamed cement have been generated using both atmospheric laboratory and high-pressure field preparation methods. Field-generated foamed cement samples were collected in constant pressure (CP) sample cylinders using the same full-scale field equipment used to generate foamed cements in a well. These samples were scanned while inside the CP cylinders using X-ray Computed Tomography with a scan resolution of approximately 35 m.Results of the laboratory testing indicate a correlation between foam quality, bubble size distribution and physical properties such as strength and permeability. Initial results also highlight key differences in laboratory and field-generated foamed cements. The variations in cement structure within the fieldgenerated foamed cement samples appear to indicate a strong relationship between the flow of the cement into the sample vessel and the final porosity and properties of the in-place hardened cement. This research will provide a better understanding of the effects that foam cement production, transport downhole, and delivery to the wellbore annulus has on the overall sealing process.

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Section: Introductionmentioning

confidence: 99%

Assessment of Foamed Cement Used in Deep Offshore Wells

Kutchko

Crandall

Moore

et al. 2014

Day 1 Wed, September 10, 2014

View full text Add to dashboard Cite

show abstract

“…The desire persists despite technology developed to upgrade the radioactive shielding technology to meet new exposure limits. 10 In recent years, efforts have been made by several groups to develop non R/A flow-through densometers for oil field applications: Thayer, et al (1993); and Cage and Schott (1996). 11,12 Benabdelkarim and Galiana (1991) have conducted a survey of various non-R/A density measurement technologies including: X ray attenuation, ultrasonic attenuation, weighing systems, and centrifugal pumps and differential pressure.…”

Section: Introductionmentioning

confidence: 99%