ACP / ECP annular casing packers (also known as external casing packer) are one of the packers types that is popular because they provide improved sealing and centralization (check also: Permanent Packers). They are used to: Prevent gas migration. Reduce the gas-to-oil production ratio. Reduce or prevent water production. Isolate production or injection zones. Avoid …
This is a minimal checklist to be made at the well site to ensure the equipment is correct, not damaged in shipment, and that all necessary tools have been received at the well site. You are making the final check. Do not assume all things are correct. Make all checks physically possible to ensure the …
The device that is run on the bottom of the casing for primary cementing is called a “shoe”. There are four basic types of shoes that run on the casing, a guide shoe, a float shoe, an automatic fill shoe, and a differential fill float shoe. In this article, we will handle both the float …
The conductor pipe runs from the seafloor/surface to relatively shallow depths, providing a conduit to allow circulation of drilling fluid and case off unconsolidated formations. It is the first string we use to support well control equipment, typically a drilling diverter. A standard size for the conductor casing pipe is 24″, 26″, or 30″. In …
The principal advantage of hydraulic set liner assemblies is that no rotation of the liner assembly is necessary to set the slips. The activation of the setting mechanism in a hydraulic-set liner hanger assembly is by creating a sufficient differential pressure to initiate the setting sequence. Normally, differential pressure is created by applying pressure down …
In a mechanical set liner hanger assembly, the setting mechanism is incorporated into the design of the liner hanger system, and its activation can be by reciprocation and rotation of the drill string at the surface. In most cases, the entire length of the casing liner below the hanger must be free to move to …
What Is Liner Hanger System? As we mention in the Casing Liner article, a Liner is a casing string that does not reach the surface. We can use liner hanger system assembly to support & hinge the casing liner on the previous casing string in oil and gas drilling wells. ( Check Types Of Casing …
What Is Casing Liner? A liners Casing used in drilling and completion is one of the Types of Casing or tubing string of varying length which is set with its top below the surface of the well. Liners can be cemented in place, and may include perforated pipe or well screen. We think that you …
We shall need centralizers to ensure the proper displacement of drilling fluids from the annular space and to place the cement evenly around the casing. Furthermore, it provides zonal isolation. In addition, They may help get the casing to the bottom, although this depends on the application. While casing centralizers are not complex devices, proper selection …
Once the Casing Seating Depths and the Casing Size of each casing string are established, the weight, grade, and couplings used in each casing string can be determined via the casing design loads cases. Loads Affecting Casing Strings In general, each casing string is designed to withstand the most severe loading conditions anticipated during casing …