High Temperature / High Pressure Test (HTHP) - Mud Testing
The HTHP test is used mainly with Oil Based Mud although it may be used with water based mud under certain circumstances such as in high temperature wells or wells which exhibit a high risk of differential sticking.
HTHP testing of water based mud is not routine and shall be specified in the Drilling Fluids Programme.
The test is used to determine the static filtration characteristics of the mud and the need for treatment with fluid loss additives under conditions of high temperature and high pressure.