with the catalyst or activator due to the need for other effects brought about by the retarder for instance chromium lignosulfonate may be used as a thinner along with the activator even though it also functions as a retarder other suitable thinners include chrome free lignosulfonate lignite sulfonated lignite sulfonated styrene maleic anhydride sulfomethylated humic acid naphthalene sulfonate a blend of polyacrylate and polymethacrylate an acrylamideacrylic acid copolymer a phenol sulfonate a naphthalene sulfonate dodecylbenzene sulfonate and mixtures thereof the selection of the proper adhesive thermoplastic material to improve bonding and sealing in well fluid in a particular situation requires two considerations first the material may be selected because it melts between the circulating temperature of the wellbore and the undisturbed geothermal temperature of the well the material is incorporated into the cement slurry drilling fluid or spotting fluid or on the outside of the casing string and placed in the wellbore at a temperature less than the static or undisturbed geothermal temperature after placement the wellbore will heat up melting the material and allowing it to fill unsealed areas and or react to adhere to surfaces or to form an ionomer with metallic ions in the cement drilling fluid and or formation secondly for thermal recovery projects or deep water wells where the well temperature of the formation is lower than the operating temperature of the well a material may be selected because it will melt at a temperature between the undisturbed geothermal temperature of the well and the operating temperature of the well or at slightly below the operating temperature of the well hot injectants.