Part
01
of six
Part
01
Well Casing & Cementing Process Details
For each step of the "Well Casing and Cementing" operation identified in Sheet 3, Column A, Rows 4-10, of the spreadsheet, a list of key vendors has been entered in Column B, a brief step description in Column C, an operation type in Column D and a "rent vs. consume" identification in Column E. Halliburton Co. is a major vendor of all the equipment/services used in this step and claims on their website to be the only integrated provider of both cementing services and casing equipment, globally.
Set the conductor casing string
In this step, conductor casing string which is essentially a long connected section of oil pipe that provides structural support for the well, wellhead and completion equipment, is placed. Its main function is to prevent well-hole sides from caving in. This is an optional step.
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., and Halliburton Co.
- The operation type for this stage is determined to be consumables since the primary component of this step is the consumption of conductor casing string for roughly the entire length of the well hole.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.
Set the surface casing
In this step, surface casing is placed from the surface to near the bottom of the well-hole. Surface casing comes in contact with the surface of the formations, and thus, acts as the primary protective casing.
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., and Halliburton Co.
- The operation type for this stage is determined to be consumables since surface casing material is consumed for the entire surface of the well hole.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.
Pump the cement
In this step, cement slurry is pumped down the casing to fill the annulus, which is the space between the outside of the surface casing and the well bore.
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., and Halliburton Co.
- The operation type for this step is determined to be consumables since cement slurry is the major material consumed here.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.
Set the intermediate casing
In this step, Intermediate casing, which is the casing string that is set after the surface casing and before the production casing to provide protection against caving of weak or abnormally pressured formations, is installed. This enables drilling fluids of different densities to be used, as necessary, for control of lower formations.
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., and Halliburton Co.
- The operation type for this step is determined to be consumables since casing material is the major component of this step.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.
Set the production casing
In this step, Production casing, which is the casing string that is set across the reservoir interval within which the primary completion components are installed, is set.
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., and Halliburton Co.
- The operation type for this step is determined to be consumables since casing material is the major component of this step.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.
Clean components
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., Halliburton Co. and Weatherford Ltd.
- The operation type for this step is set to "labor" since the actual cleaning operation is the key component of this step.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.
Filter completion fluids
In this step completion fluid the solid-free liquid used to "complete" an oil/gas well is filtered to between 2 and 10 microns to prevent the formation of down hole contamination.
- Key vendors for this step/service include Schlumberger Ltd., Baker Hughes Co., Halliburton Co. and Weatherford Ltd.
- The operation type for this step is set to "consumables" since the actual filters and associated material are the key component of this step.
- Accordingly, the rent vs. consume demarcation for this step is set to consume.