CEMENT SLURRY DESIGN FOR SQUEEZE CEMENTING SOLUTION PROVIDE ANNULAR ISOLATION IN DUYONG FIELD MALAYSIA

Among the main problem during cement squeeze operation is the fluid loss to
the formation and the low compressive strength of set cement. During cement squeeze
operation, the cement slutry will be force into the formation by pressure. This
phenomenon will create differential pressure between the cement slurry and the
formation thus will lead to the Wgh filtration where lot of fluid inside the cement slutry
will filtrate out. As the result set cement will bridge off and not set properly inside the
permeable formation thus resulting in failure of squeezes cementing operation.
The objective of this project was to create cement slurry design which focusing
on creating high compressive strength cement and low fluid loss cement slurry. Critical
studies had been carried out to understand and identify the suitable additives that give
high influence on those parameters. The expected cement slurry design could also be
utilized at Duyong' s field Malaysia as this cement slurry will be focusing to meet the
criteria of Duyong' s well.
III the early stage of this project there has been literature review studies about the
others research which had been done before to eliminate the redundant of the research.
Then the research was continued with the understanding on conventional cement which
was Portland Type G oil well cement. Next further studies has been emphasizing on the
additive which was suitable to meet the objective. The sample of the cement has also
been tested at laboratory by using the equipment of Compressive Strength Tester and
High Pressure and High Temperature Filter Press in order to evaluate the properties.
Prior to the requirement of Duyong field, Malaysia, the expected result for this
project was to create the set cement slurry with high compressive strength of22MPa and
low fluid loss cement slurry of 15cm'/30min.
As the conclusion, this project has been successfully create a cement slurry
design with high compressive strength set cement and low fluid loss cement slurry.
These two parameters were really crucial in squeeze cement operation and will help in
increasing the success rate of the operation.