Chrysotile asbestos fiber was incorporated as a lost-circulation additive and viscosifier in some formulations of oil well drilling mud and completion fluid used in petroleum exploration and production from the 1940s through the 1970s. Drilling crews and mud engineers who mixed and handled these products in enclosed drilling environments were exposed to respirable asbestos fibers. The practice diminished following OSHA regulation in the 1970s, but workers from prior decades may carry significant latent disease risk.
9 products ·1 manufacturer
Halliburton Company and Schlumberger — the two dominant global oilfield services companies — supplied asbestos-containing …
Baroid Industries (NL Industries) sold raw chrysotile asbestos fiber to oilfield drilling operators as Visquik and Baroid Asbestos …
Cameron Iron Works (founded Houston TX) was a dominant U.S. manufacturer of wellhead equipment, blowout preventers, and …
Hughes Tool Company (founded by Howard R. Hughes Sr.) was the dominant U.S. manufacturer of rotary drill bits and rotary-drilling …
IMCO Services (later part of Halliburton's drilling-fluid business) sold chrysotile asbestos drilling-mud viscosifier additives as …
Magcobar (a division of Dresser Industries, later Dresser-Magcobar) sold raw chrysotile asbestos drilling-mud viscosifier as …
Reed Rock Bit Company (today part of Baker Hughes) was a major U.S. manufacturer of oilfield rotary drill bits and drilling …
Smith International was a major U.S. manufacturer of oilfield drill bits, downhole tools, and drilling-equipment components …
Montello, Inc. was a U.S. supplier of oil and gas drilling additives including asbestos-bearing drilling-fluid materials supplied …
Each manufacturer is listed with the specific products they sold in this category. Click a manufacturer name for the full exposure and legal history.
If you have been diagnosed with an asbestos-related disease and were exposed to asbestos-containing products, you and your family may have a legal claim. An attorney experienced in product liability and asbestos claims can evaluate your case — at no cost to you.
If you were diagnosed with an asbestos-related disease, a filing deadline may already be running. You may have a legal claim now — and claims can often be pursued even if the company is out of business.
Surviving spouses and children may pursue a wrongful-death claim and asbestos-trust recovery on a loved one's behalf — a separate deadline that can run from the date of passing.