Technical Library

01/05/2008

In order to facilitate a lower zone fracture treatment, three sets of perforations required a high-pressure, gas-tight isolation treatment that would maximize casing ID for completion tools. The solution provided a successful, gas-tight isolation of the three sets of perforations...

06/30/1999

Expandable-tubular technology involves a process that expands casing in oil wells drilled in especially challenging environments, such as deepwater. Until now, operators have had to use progressively smallerdiameter pipe as a well was drilled deeper; but expandable-tubular goods are designed for...

02/22/2000

Establishing and maintaining hydraulic integrity between liner hangers and the base casing in which they are set has long been one of the most problematic areas facing operators. With failure rates on pressure seals in overlaps now exceeding 40% in some regions, the need for a solution to this...

09/09/2003

For years, the reduction of tubular inside diameter (ID), or “telescoping effect,” limited the exploration and production of oil and gas. Using conventional technology, operators faced significant loss of ID in the course of the normal drilling process, during reentry and deepening of existing...

07/14/2011

An operator in the northern Colorado, Piceance basin discovered a part in 4-1/2 in. base casing. The casing split meant they would not be able to complete the lower six stages of the well. The operator initially used conventional methods in an effort to repair the damaged casing to recover the...

12/28/2011

The Operator had two sections of perforations in 4-1/2 in. casing that needed to be repaired. They required a solution that would repair the 4-1/2 in. casing and still maintain sufficient ID for this well to be used as a power water injector well.

09/01/2013
In the Marcellus Shale, fracturing rates and pressures can be substantial, but there are other problems also associated with completing these wells, which can promote casing failure or compromise the pressureintegrity of a well. A...
12/01/2009

In the first stage of the fracturing program, the uppermost fracture sleeve failed - leaving the economic viability of the wells at risk.

09/30/2013

An Operator, in the Ardmore Basin, was unable to put a well onto first production due to casing damage at a 5½” to 4½” casing crossover.

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