Cementing gas wells in methane formations by using conventional lightweight cement mortars and/or foam cement significantly increases the likelihood of maintaining circulation during cement placement. Foam cement for gas wells and properties of cementing was studied. The test results obtained are shown in graph form.

Coal bed methane (CBM), foam cement, compressive strength, low density, additives, filter press.

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White, J., Moore, S., Miller, M., and Faul, R.: “Foaming Cement as a Deterrent to Compaction Damage in Deepwater Production,” paper SPE 59136 presented at the 2000 IADC/SPE Drilling Conference, New Orleans, Feb. 23-25.

Deeg, W.F., Griffith, J.E., Crook, R.J., and Benge, G.: “How Foamed Cement Advantages Extend to Hydraulic Fracturing Operations,” World Oil (Nov. 1999) 51-53.

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