A Precision Drilling Tool – A New Approach to Open for Production by Using a Novel Method to Drill Holes Through Base Pipe in Sand Screen or through Tubing/Casing

2019 ◽  
Author(s):  
Espen Johan Magnussen ◽  
Vidar Haugen ◽  
Saman Sarbaz ◽  
Ole Edvind Eddie Karlsen ◽  
Lars Bjarne Nordaas ◽  
...  
Keyword(s):  
Drilling Tool ◽  
New Approach ◽  
Novel Method ◽  
Drill Holes

scholarly journals LiDAR-Based Glass Detection for Improved Occupancy Grid Mapping

Sensors ◽  
2021 ◽  
Vol 21 (7) ◽  
pp. 2263
Author(s):  
Haileleol Tibebu ◽  
Jamie Roche ◽  
Varuna De Silva ◽  
Ahmet Kondoz
Keyword(s):  
Laser Scanner ◽  
Point Clouds ◽  
Light Detection And Ranging ◽  
Test Results ◽  
New Approach ◽  
Occupancy Grid ◽  
Laser Scanners ◽  
Novel Method ◽  
Occupancy Grid Mapping ◽  
Cartesian Coordinate

Creating an accurate awareness of the environment using laser scanners is a major challenge in robotics and auto industries. LiDAR (light detection and ranging) is a powerful laser scanner that provides a detailed map of the environment. However, efficient and accurate mapping of the environment is yet to be obtained, as most modern environments contain glass, which is invisible to LiDAR. In this paper, a method to effectively detect and localise glass using LiDAR sensors is proposed. This new approach is based on the variation of range measurements between neighbouring point clouds, using a two-step filter. The first filter examines the change in the standard deviation of neighbouring clouds. The second filter uses a change in distance and intensity between neighbouring pules to refine the results from the first filter and estimate the glass profile width before updating the cartesian coordinate and range measurement by the instrument. Test results demonstrate the detection and localisation of glass and the elimination of errors caused by glass in occupancy grid maps. This novel method detects frameless glass from a long range and does not depend on intensity peak with an accuracy of 96.2%.

scholarly journals New approach in the application of lignin for the synthesis of hybrid materials

2017 ◽  
Vol 89 (1) ◽  
pp. 161-171 ◽  
Author(s):  
Beata Podkościelna ◽  
Marta Goliszek ◽  
Olena Sevastyanova
Keyword(s):  
Suspension Polymerization ◽  
Nitrogen Adsorption ◽  
Experimental Protocol ◽  
New Approach ◽  
Surface Areas ◽  
Adsorption Data ◽  
Novel Method ◽  
Derivatives Of ◽  
Polymerization Method ◽  
Nitrogen Adsorption Data

AbstractIn this study, a novel method for the synthesis of hybrid, porous microspheres, including divinylbenzene (DVB), triethoxyvinylsilane (TEVS) and methacrylated lignin (L-Met), is presented. The methacrylic derivatives of kraft lignin were obtained by reaction with methacryloyl chloride according to a new experimental protocol. The course of the modification of lignin was confirmed by attenuated total reflectance (ATR-FTIR) and nuclear magnetic resonance (NMR) spectroscopy. The emulsion-suspension polymerization method was employed to obtain copolymers of DVD, TEVS and L-Met in spherical forms. The porous structures and morphologies of the obtained lignin-containing functionalized microspheres were investigated by low-temperature nitrogen adsorption data and scanning electron microscopy (SEM). The microspheres are demonstrated to be mesoporous materials with specific surface areas in the range of 430–520 m2/g. The effects of the lignin component on the porous structure, shape, swelling and thermal properties of the microspheres were evaluated.

SIDE FAULT MAPPING ENABLED BY 2D TRANSVERSE INVERSION ON NEW DEEP DIRECTIONAL RESISTIVITY MEASUREMENTS

2021 ◽  
Author(s):  
Michael Thiel ◽  
◽  
Haifeng Wang ◽  
Dzevat Omeragic ◽  
Jean-Michel Denichou ◽  
...  
Keyword(s):  
Transverse Plane ◽  
Inversion Algorithm ◽  
Drilling Tool ◽  
New Approach ◽  
Resistivity Measurements ◽  
Oil Reserves ◽  
New Class ◽  
Novel Approach ◽  
Well Trajectory ◽  
Thickness Variations

Faulting is one type of structural trap for hydrocarbon reservoirs. With more and more fields moving toward the brownfield or mature operations stage of life, the opportunity to target bypassed or attic oil in the vicinity of bounding fault(s) is becoming more and more attractive to operators. However, without an effective logging-while-drilling (LWD) tool to locate and map a fault parallel to the well trajectory, it has been challenging and potentially high risk to optimally place a well to drain oil reserves near the fault. Operators often plan these horizontal wells at a significant distance away from the mapped fault position to avoid impacts to the well construction and production of the well. Often, the interpreted fault position, based on seismic data, can have significant lateral uncertainty, and uncertainties attached to standard well survey measurements make it challenging to place the well near the fault. This often results in the wells being placed much farther from the fault than expected, which is not optimal for maximizing recovery. In other cases, due to uncertainty in the location of the fault, the wells would accidentally penetrate the side faults and cause drilling and other issues. Conventional remote boundary detection LWD tools do not assist with locating the fault position, as they only detect formation boundaries above or below the trajectory and not to the side. In this paper, the authors propose a novel approach for mapping features like a fault parallel to the well trajectory, which was previously impossible to map accurately. This new approach utilizes a new class of deep directional resistivity measurements acquired by a reservoir mapping-while-drilling tool. The deep directional resistivity measurements are input to a newly devised inversion algorithm, resulting in high-resolution reservoir mapping on the transverse plane, which is perpendicular to the well path. These new measurements have a strong sensitivity to resistivity in contrast to the sides of the wellbore, making them suitable for side fault detection. The new inversion in the transverse plane is not limited to detecting a side fault; it can also map any feature on the transverse plane to the well path, which further broadens the application of this technology. Using the deep directional resistivity data acquired from a horizontal ultra-ERD well recently drilled in the Wandoo Field offshore Western Australia, the authors tested this approach against the well results and existing control wells. Excellent mapping of the main side fault up to 30 m to the side of the well was achieved with the new approach. Furthermore, the inversion reveals other interesting features like lateral formation thickness variations and the casing of a nearby well. In addition, the methodology of utilizing this new approach for guiding geosteering parallel to side fault in real time is elaborated, and the future applications are discussed.

Development of the Hole Generation Technology for Aircraft CFRP Parts

2012 ◽  
Vol 523-524 ◽  
pp. 226-231 ◽  
Author(s):  
Hitoshi Fukagawa ◽  
Toshiki Hirogaki ◽  
Takao Kato ◽  
Atsushi Kato ◽  
Masako Seki
Keyword(s):  
Polycrystalline Diamond ◽  
Reinforced Plastics ◽  
Aerospace Applications ◽  
Coated Tools ◽  
Drilling Method ◽  
Efficiency Cost ◽  
Novel Method ◽  
Drill Holes ◽  
Pcd Tools ◽  
Hole Generation

Carbon fiber-reinforced plastics (CFRP), which are now used in some aerospace applications, is difficult to cut and drill holes in. Moreover, no reports have focused on selecting a suitable drilling method for each aerospace part. This paper discusses many methods of hole generation for CFRP composites, including methods using traditional drill tools and non-traditional methods such as abrasive water jet (AWJ), laser beam and abrasive blast. We look at traditional cemented carbide material tools, polycrystalline diamond (PCD) tools, diamond-like carbon (DLC) coated tools and ceramic tools. Then, comparing the experimental results of these methods from the viewpoints of characteristics, efficiency, cost, and hole quality, we investigate each problem to select the suitable drilling method. As a result, we propose a novel method to strategically obtain the best solutions to generate holes in aerospace parts.

Applying Interval Fuzzy Petri Net to Failure Analysis

2020 ◽  
Vol 11 (1) ◽  
pp. 14-30
Author(s):  
Lajmi Fatma ◽  
Jalel Ghabi ◽  
Hedi Dhouibi
Keyword(s):  
Fuzzy Logic ◽  
Failure Analysis ◽  
Petri Nets ◽  
Graphical Representation ◽  
Logic Gate ◽  
New Approach ◽  
Novel Method ◽  
Definition Of ◽  
Fuzzy Logic Technique ◽  
The Relationship

In this article, the authors propose a new approach for modelling and failure analysis by combining the graphical representation provided by Petri nets and fuzzy logic. The graphical method is used for describing the relationship between conditions and events. The use of Petri nets in failure analysis enables replacing logic gate functions in fault trees. The Fuzzy logic technique allows natural language descriptions of process entities as well as an if-then rule-based definition of production. In addition, this study devises an alternative, a trapezoidal graph method in order to account for failure scenarios. Examples validating this novel method in dealing with failure analysis are also provided.

The Microstructural Record of Predation: A New Approach for Identifying Predatory Drill Holes

Palaios ◽  
2008 ◽  
Vol 23 (12) ◽  
pp. 810-820 ◽  
Author(s):  
J. D. Schiffbauer ◽  
Y. Yanes ◽  
C. L. Tyler ◽  
M. Kowalewski ◽  
L. R. Leighton
Keyword(s):  
New Approach ◽  
Drill Holes

scholarly journals A novel method for archiving multibeam sonar data with emphasis on efficient record size reduction and storage

2013 ◽  
Vol 20 (1) ◽  
pp. 77-86 ◽  
Author(s):  
Marek Moszynski ◽  
Andrzej Chybicki ◽  
Marcin Kulawiak ◽  
Zbigniew Lubniewski
Keyword(s):  
New Approach ◽  
Multibeam Echosounder ◽  
Fish Schools ◽  
The Past ◽  
Processing Power ◽  
Efficient Reduction ◽  
Crucial Problem ◽  
Novel Method ◽  
Spatial Positioning ◽  
And Storage

Abstract Over the past few years considerable advances in sonar technology, spatial positioning capabilities and computer processing power have lead to significant improvements in mapping, imaging and technologies of seafloor exploration. Recently, modern multibeam echosounder systems (MBES) capable of recording backscatter data for the whole water column, not just for the seabed, have become available thus providing data allowing for visualization and analysis of objects other than the seabed such as single fish, fish schools or pollution. Unlike bathymetric sonars, which only capture the seafloor, multibeam systems produce very large amounts of data during surveys. Because of this, storing the data collected during hydrographic or scientific cruises becomes a crucial problem. In this context, the paper proposes a new approach for efficient reduction and storage of MBES records. The results of a sample implementation of the algorithm being tested on several different sets of MBES data are also discussed.

A Novel Method for Onsite Commissioning of Wide-Area Protection

2013 ◽  
Vol 336-338 ◽  
pp. 1449-1454
Author(s):  
Jing Shi ◽  
Qi Huang ◽  
Zheng Tao Jiang
Keyword(s):  
Smart Grid ◽  
Power Grid ◽  
Wide Area ◽  
Secondary System ◽  
Wide Area Protection ◽  
New Approach ◽  
Electromagnetic Transient ◽  
Protection Technology ◽  
Novel Method ◽  
Protection Devices

The wide-area protection technology is considered to apply in construction of smart grid, which offers new challenge to verifying work for secondary system. This paper describes a new method for onsite commissioning of wide-area power grid. It can accomplish coordination tests for protection devices in different areas based on numerical simulation and wireless commutation technology. Because structure of power grid is too complex to calculate results of electromagnetic transient efficiently. A new approach of simulation is shown in the paper, which uses FDNE circuit to replace external system. And an example of test is offered. The simulation result indicates that electromagnetic transient computation with FDNE can be satisfied with debug work for occurrence chains in smart grid.

Thick Stool Smear Wet Mount Examination: A New Approach in Stool Microscopy

2003 ◽  
Vol 33 (3) ◽  
pp. 173-173 ◽  
Author(s):  
Subhash Chandra Parija ◽  
Sanjay Bhattacharya ◽  
Prasant Padhan
Keyword(s):  
Intestinal Parasites ◽  
Laboratory Diagnosis ◽  
Parasitic Infections ◽  
New Approach ◽  
Intestinal Parasitic Infections ◽  
Wet Mount ◽  
Cotton Blue ◽  
Novel Method ◽  
Stool Samples ◽  
The Difference

Microscopic examination of a wet mount of the stool has been the standard practice for the laboratory diagnosis of intestinal parasitic infections. Here we describe a novel method of stool microscopy of 80 stool samples, 31 (38.75%) were positive by the new thick stool smear wet mount method, whereas the corresponding figure for the conventional method using lacto-phenol cotton blue was 16 (20%). The difference was found to be statistically significant ( P<0.04 by McNemar's test). The thick stool smear wet mount procedure promises to be superior to the direct wet mount method in the detection of the intestinal parasites.

scholarly journals A Novel Method of Small Target Detection in Sea Clutter

2011 ◽  
Vol 2011 ◽  
pp. 1-10 ◽  
Author(s):  
Peng Wu ◽  
Jun Wang ◽  
Wenguang Wang
Keyword(s):  
Grazing Angle ◽  
Decomposition Theorem ◽  
Scattering Matrix ◽  
Radar Signal ◽  
Radar Signal Processing ◽  
Sea Clutter ◽  
New Approach ◽  
Small Target Detection ◽  
Novel Method ◽  
Marine Radar

Detecting low observable targets within sea clutter at low grazing angle is one of the research hotspots in radar signal processing community. In this paper, we have proposed a novel method based on polarimetric decomposition theorem. The polar characteristics of sea clutter has been analyzed, with the parameters after the decomposition of target scattering matrix. The scattering entropy and the scattering angle are the key parameters to discriminate the target from the sea clutter. The technique is designed to suppress unwanted sea clutter at polarimetric domain. Datasets from real marine radar are used to illustrate the performance of the new approach.

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