... The success of multi-stage fracturing has driven operators to primarily utilize plug-and-perf or ball-and-seat completion techniques. Today, wellbore restrictions or obstructions are created regardless which completion method is selected. When composite frac plugs are used, milling operations...

... to evaluate the ball seats and valve status, any blockage that might be present, and to determine the required intervention scope going forward. A camera diagnostic run indicated the presence of debris. A subsequent LWI operation was planned, to deploy an electric line powered mechanical toolstringto mill...

...Engineered pilot mill bit design requirements and criteria The operator and services companies worked closely on the mill bit engineering design. The key requirement was to ensure the mill bit could guide into and mill the top swaged sections without damaging the production tubing. Once...

... with different pH and pH2S. In addition, the effect of different surface conditions and microstructures were investigated by comparing machined surface with surface preserved with mill scale which was formed during hot rolling as well as surfaces containing a local hard zone. The morphological characteristics...

... microstructure alloy rights corrosion damage Paper No. 17528 Nickel Based Alloy Casting Failure in Potash Production Mill Bernard Peterson P. Eng. Stantec Energy and Resources Inc. 910 Louisiana Street Suite 2600 Houston, Texas, 77002-4916 USA Brian Wilson P. Eng. Acuren Group Inc. 11411 25th Avenue NE...

... that the susceptibility of the material to intergranular corrosion in the "as delivered" (mill-annealed) condition, so as after the exposure of the material to intermediate temperatures, is strongly dependent on the chemical composition and additionally on the thermal history. This work consists on the variation...

... Abstract There exists a commonly-held belief that as-delivered oil country tubular goods (OCTG) possess superior resistance to sulfide stress cracking (SSC) than standardized testing for SSC may identify. This belief relies on the nature of the mill scale present on OCTG being a barrier...

...1. INTRODUCTION Compared with the conventional drill bit, the jet mill bit has added turbulent negative pressure sand extraction and impact crushing structure. High-speed jets are generated in the internal flow channel by water jet technology, forming negative pressure at the bottom of the well...

... Abstract Well completions in the United States are predominantly completed using the plug and perforate process. Following the fracture stimulation treatment, coiled tubing (CT) is utilized to convey a downhole milling assembly to remove these plugs and clean out the wellbore. As wells continue...

... Abstract Case studies of mill-out operations in the Permian Basin which evaluate chemical programs and processes used. Results show how existing processes and chemicals used or lack thereof, can affect equipment and undo the preventative chemical treatments used during the hydraulic fracturing...

... While designing the assembly components for the 20 inch casing milling operation, due care was taken to stabilize the mill body so as to minimize the lateral movements in the string. Moreover, milling operations being potential causes of downhole vibrations being transmitted to surface equipments...

... Abstract Case studies of mill-out operations in the Permian Basin which evaluate chemical programs and processes used. Results show how existing processes and chemicals used or lack thereof, can affect equipment and undo the preventative chemical treatments used during the hydraulic fracturing...

...Composite Cemented Backfill Based on Fly Ash, Bottom Ash and Mill Tailings Sandeep Panchala,* and Debasis Debb a Visvesvaraya National Institute of Technology, Nagpur, India 440010 b Indian Institute of Technology, Kharagpur, India 721 302 deb.kgp@gmail.com, * panchaliit@gmail.com (corresponding...

... incorporating Coil tubing (CT) and e-line interventions concluded that standard milling operations would pose additional challenges for the well due to the design of the completion below the isolation valve. Subsequently, a unique, star shaped milling bit was designed and manufactured to enable milling...

... ABSTRACT Specimens of duplex stainless steel (DSS) were exposed at temperature of 200°C in industrial white liquor from a Brazilian kraft mill using an autoclave to simulate the same conditions of a digester processing. Tafel extrapolation method and weight loss were used to evaluate...

... ABSTRACT This paper describes the cracking failure of a UNS S30403 (304L) stainless steel 72% heavy black liquor storage tank at a Canadian bleached kraft pulp mill. The tank was installed in 1995 and operated reliably for 20 years when leaks were found in the upper part of the cylindrical...

... Abstract Cuttings accumulation is a major challenge in horizontal gas drilling, it may lead to accidents such as wellbore plugging and pipe sticking. The newly-developed jet mill bit (JMB) may overcome the challenge fundamentally by comminuting cuttings into dusk-like scale right after...

... mill, tri-cone and PDC bits in terms of debris size vs weight-on-bit. Two main criteria will be used for the analysis. Firstly, a test will be carried out in order to determine how the set down force affects the drilling tool in terms of generating smaller debris size. This knowledge intends to improve...

... ( Joshi et al, 2008 ). Many studies have been carried out using free cost or low cost feed stocks or agricultural by-products and wastes as substrates for biosurfactant production ( Saimmai et al, 2011 ; 2012a ). One of such substrate is the use of Palm Oil Mill Effluent (POME). Palm oil milling is one...