Dec 10, 2019 · In General, there are six casing types used in drilling Casing Design in all onshore and offshore wells, which are as follows: Structural Casing or Drive Pipe Conductor Casing

This video describes the different types of casing used for well construction. By the time, a well is drilled to its final depth, it usually has several stri...

For casing pipe, most popular threading type is LTC (Long thread coupling), STC (Short thread coupling) and BTC (Buttress thread coupling).For all casing sizes, the threads are not intended to be leak resistant when made up.The design of those threading types you can find them in …

Casing is installed during the drilling phase to protect and stabilize the wellbore. Tubing is installed for production, to transport oil or gas to the surface. Casing provides structural integrity and isolation. Tubing is primarily used for the movement of oil or gas.

Dec 9, 2019 · To calculate the joint strength of a given thread depends on grade, size and weight of the casing and on the effective size of the threads. Below there are two formulas: 1- The first one is for minimum strength of a joint failing for fracture

Recommended spacing are for guidance only. User needs to set appropriate values to assure performance for high potential test, impulse test, high humidity, partial discharge, high altitude, and other considerations like configuration. Note: It is recommended that system line-to-line voltage not exceed the transformer maximum system voltage level.

Whether used for revenue metering or precise voltage regulation, the PTG3 provides a trusted solution for accurate and safe voltage transformation in medium voltage networks. UL Recognized, CSA Secondary Terminals are No. 10-32 screws with one lock washer & flat washer.

Two fuse transformers should not be used for Y connections. It is preferred practice to connect one lead from each voltage transformer directly to the neutral terminal, using a fuse in the line side of the primary only. By using this connection a transformer can never be made live from the line side by reason of a blown fuse in the neutral side.

Dec 16, 2015 · Casing has many functions and can be summarized as follows: - Provide a support for fractured, weak and vulnerable formations. - Prevent contamination of fresh water zones. - Isolate abnormal pressure zones and also lost circulation zones. - Provide passage for production fluids.

ECOMMENDED SPACING IS FOR GUIDANCE ONLY. USER NEEDS TO SET APPROPRIATE VALUES TO ASSURE PERFORMANCE FOR: HIGH POTENTIAL TEST; IMPULSE TEST; HIGH HUMIDITY; PARTIAL DISCHARGE; HIGH ALTITUDE; AND.