Room 101

Heilongjiang, China
Heilongjiang, China
SEARCH FILTERS
Time filter
Source Type

Hou R.,Room 101 | Zhang J.,Room 101 | Xu T.,Room 101 | Liu K.,Room 101
Drilling Fluid and Completion Fluid | Year: 2014

High temperature high density oil base drilling fluid has static and dynamic settling stability that are difficult to control. A modified VST settling stability test is used to measure the static settling stability of high temperature high density oil base drilling fluid, and analyses are done on the effect of several factors on the settling stability and rheology. These factors include the use of organophilic clay, viscosifier, wetting agent in oil base mud, and the ratio of viscosifier to organophilic clay. The study shows that good static and dynamic settling stability can be obtained with high concentration of organophilic clay, with mud viscosity being increased at the same time. Settling stability of the mud can be improved if a proper ratio of viscosifier and organophilic clay is used. An optimized oil base mud of 2.0 g/cm3 is as follows, based on laboratory test: Stable at 200℃, concentration of additives: organophilic clay 3.5%-4.5%, viscosifier 0.25%-0.3%, wetting agent 2.5%, and optimum ratio of viscosifier to organophilic clay is 1:(17-18).


Hou R.,Room 101
Drilling Fluid and Completion Fluid | Year: 2014

High temperature high density oil base drilling fluid has static and dynamic settling stability that are difficult to control. A modified VST settling stability test is used to measure the static settling stability of high temperature high density oil base drilling fluid, and analyses are done on the effect of several factors on the settling stability and rheology. These factors include the use of organophilic clay, viscosifier, wetting agent in oil base mud, and the ratio of viscosifier to organophilic clay. The study shows that good static and dynamic settling stability can be obtained with high concentration of organophilic clay, with mud viscosity being increased at the same time. Settling stability of the mud can be improved if a proper ratio of viscosifier and organophilic clay is used. An optimized oil base mud of 2.0 g/cm3 is as follows, based on laboratory test: Stable at 200 °C, concentration of additives: organophilic clay 3.5%-4.5%, viscosifier 0.25%-0.3%, wetting agent 2.5%, and optimum ratio of viscosifier to organophilic clay is 1 : (17-18).

Loading Room 101 collaborators
Loading Room 101 collaborators