摘要 |
<p>The invention provides well drilling and servicing fluids, and methods of drilling, completing, or working over a well therewith, preferred fluids comprise an aqueous liquid, a water soluble polymer viscosifier (preferably xanthan gum), a polymeric fluid loss control additive (preferably a partially depolymerized partially crosslinked hydroxyalkyl ether derivative of starch or a hydroxyalkyl ether derivative of a partially crosslinked and partially depolymerized starch), and as a bridging agent a particulate magnesia that has an Activity Index greater than about 800 seconds, preferably from about 800 seconds to about 3000 seconds.</p> |
申请人 |
TEXAS UNITED CHEMICAL COMPANY, LLC.;HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
DOBSON, JAMES, W., JR.;TRESCO, KIM, O.;FERNANDEZ, JORGE, M.;TODD, BRADLEY, L.;MUNOZ, TRINIDAD, JR. |