| http://www.w3.org/ns/prov#value | - Another example of a method of the present invention is a method of drilling a directional hole through the side of a well bore penetrating a subterranean formation, the method comprising: providing a self-degrading cement composition that comprises a degradable material, an acid source, a base source, and a water source; placing the self-degrading cement composition in a desired location in the w
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