Breakthrough on Routine Service Cycle Time Improvement – Leap Frog Concept, Duri Field, Indonesia

2020 ◽  
Author(s):  
R. Irawan
Keyword(s):  
Cycle Time ◽  
Critical Path ◽  
Well Control ◽  
Routine Service ◽  
New Process ◽  
Work Concept ◽  
Preparation Step ◽  
One Step ◽  
Time Average ◽  
Moving Process

Leap frog concept was created to address the loss of single joint rig agility and drive the cycle time average lower than ever. The idea is to move the preparation step into a background activity that includes moving the equipment, killing the well, dismantling the wellhead and installing the well control equipment/BOP before the rig came in. To realize the idea, a second set of equipment is provided along with the manpower. By moving the preparation step, the goal is to eliminate a 50% portion of the job from the critical path. The practice is currently performed in tubing pump wells on land operations. However, the work concept could be implemented for other type of wells, especially ESP wells. After implementation, the cycle time average went down from 18 hours to 11 hours per job, or down by ~40%. The toolpusher also reports more focused operations due to reduced scope and less crew to work with, making the leap frog operation safer and more reliable. Splitting the routine services into 2 parts not only shortened the process but it also reduces noise that usually appear in the preparation process. The team are rarely seen waiting on moving support problems that were usually seen in the conventional process. Having the new process implemented, the team had successfully not only lowered cycle time, but also eliminated several problems in one step. Other benefits from leap frog implementation is adding rig count virtually to the actual physical rig available on location, and also adding rig capacity and completing more jobs compared to the conventional rig. In other parts, leap frog faced some limitation and challenges, such as: limited equipment capability for leap frog remote team to work on stuck plunger, thus hindering its leap frog capability, and working in un-restricted/un-clustered area which disturb the moving process and operation safety.

Design Methods

1996 ◽  
Author(s):  
Bruce I. Blum
Keyword(s):  
Information Systems ◽  
Real World ◽  
Process Model ◽  
Adaptive Design ◽  
Critical Path ◽  
Real World Problem ◽  
Military Applications ◽  
Design Paradigm ◽  
Operational Change ◽  
One Step

The previous chapter on the software process introduced two contrasting orientations: problem and product. Both orientations have the same objective: the efficient and effective creation of an automated response to a real-world problem. They differ only in the methods and tools used to achieve that end. In the product-oriented model, the difficulty of realizing a solution is accepted as the critical path. Thus, the approach applies the principle of separation of concerns and divides the process into two discrete activities: first establish the essential requirements of what is needed, and then build a product that will satisfy those requirements. As already noted, this model is appropriate when the requirements are stable or if the complexity of development is so great that a fixed specification is necessary to reduce risk. In contrast, the problemoriented model is valuable for real-world problems with open requirements (open both in the sense of initial uncertainty and of operational change). Unfortunately, it can be implemented only for domains in which the technology is relatively mature. For example, military applications that push the limits of technology have open requirements (i.e., they begin with uncertainty and are subject to modification as potential adversaries develop responses to newly introduced capabilities). In this domain, however, the technology may be too complex for development without frozen requirements. In other domains, such as interactive information systems, the technological challenges are sufficiently well understood to permit a problem-oriented approach with its one-step process model. The adaptive design paradigm proposed in this book is problem oriented. The instantiation I describe in the next two chapters creates interactive information systems. In principle, there is no reason why the adaptive design model may not be used for complex, real-time military applications; the fact that it has not been so used is a function of our knowledge of that domain and not a limitation of the paradigm. There always will be a fuzzy boundary about the technology that separates what we can and cannot do. At that boundary, we must rely on experimentation and hacking to gain understanding.

Simultaneous Synthesis and Consolidation of Nanostructured MoSi2

2002 ◽  
Vol 17 (3) ◽  
pp. 542-549 ◽  
Author(s):  
Christophe Gras ◽  
Frédéric Bernard ◽  
Frédéric Charlot ◽  
Eric Gaffet ◽  
Zuhair A. Munir
Keyword(s):  
Planetary Mill ◽  
Uniaxial Pressure ◽  
Line Broadening ◽  
X Ray Diffraction ◽  
Simultaneous Application ◽  
X Ray ◽  
Short Period ◽  
New Process ◽  
One Step ◽  
Simultaneous Synthesis

A new process combining electric field activation and the imposition of pressure from mechanically activated powder mixtures is demonstrated as a means to simultaneously synthesize and densify nano-MoSi2 in one step. Nanophase reactants (Mo + 2Si) produced by mechanical activation are reacted by field activation with the simultaneous application of a uniaxial pressure. Mo + 2Si powders were comilled in a specially designed planetary mill to obtain nanometric reactants but to avoid formation of any product phases. These were then subjected to high alternating currents (1600 A) and pressures of 106 MPa. Under these conditions, a reaction is initiated and completed within a short period of time (3–6 min). The relative density of the product ranged from 82 to 93%. The crystallite size of the MoSi2 compound was determined by x-ray diffraction line-broadening analysis using the Langford method. The size ranged from 58 to 75 nm.

The influence of mold temperature on thermoset in-mold forming

2020 ◽  
Vol 40 (3) ◽  
pp. 256-266
Author(s):  
Tim Deringer ◽  
Dietmar Drummer
Keyword(s):  
Injection Molding ◽  
Bond Strength ◽  
Mechanical Performance ◽  
Mold Temperature ◽  
Short Fiber ◽  
Epoxy Compound ◽  
Fiber Reinforced ◽  
Continuous Fiber ◽  
New Process ◽  
One Step

AbstractA new process, called thermoset in-mold forming, for combining thermoset master forming and thermoset forming in one mold is in development. A pre-impregnated continuous-fiber reinforced sheet based on epoxy (prepreg) is formed in the injection molding machine, followed by instantaneous overmolding of a short-fiber reinforced epoxy compound in one step. Compared with conventional processes in which thermoset injection molding, prepreg compression molding, and hence curing of the materials are separated, the new process allows for the combination in one step and simultaneous curing of both components. The result is a hybrid component, which features a continuous-fiber reinforced part for higher mechanical performance and a short-fiber reinforced part with high design freedom for integration of additional functions. For a successful combination of both materials in one process, it is essential to investigate the bond strength between them in relation to the processing parameters and their influence on the degree of cure. This paper analyzes the influence of the mold temperature in this process on curing degree, bond strength, and the processing viscosity.

scholarly journals Cab Transfer Process Improvement at an Automotive Manufacturing Facility

2014 ◽  
Vol 564 ◽  
pp. 105-109
Author(s):  
Nazrul Idzham Kasim ◽  
Z. Leman ◽  
Mohd Azam Musa ◽  
B.T. Hang Tuah bin Baharudin
Keyword(s):  
Process Improvement ◽  
Transfer Process ◽  
Process Design ◽  
Cycle Time ◽  
General Assembly ◽  
Automotive Manufacturing ◽  
Manufacturing Facility ◽  
Root Cause ◽  
Process Study ◽  
New Process

This project is related to the improvement of cab transfer process from Painted Body Storage (PBS) area to General Assembly (GA) line. The objectives of this project are to eliminate the root cause of cab defect and to streamline the transfer process with the reduction of process cycle time. From the current process study, it is found that the lifting method causes the quality defect to the cab and the usage of different type of trolley between PBS and GA contribute to the high cycle time. The new process design has been introduced from the findings with the use of towing method and the use of common trolley for both PBS area and GA line. With the new and improved cab transfer process, the cab changing process can be eliminated. Hence, the number of operator required has been reduced, from two operators to only one operator. A trial run has been conducted with a prototype trolley and a forklift. The objectives of this project are fulfilled with the new towing method that eliminate the quality defect and the use of common trolley for both PBS and GA line resulting new cycle time of 7.13 minutes per unit from 9.77 minutes per unit. Further studies are needed for commissioning and monitoring to the new cab transfer process with the actual trolley and tow tug or buggy.

Process Influences in the Combined Compacting and Back-Injection Process to Produce Back-Injected Self-Reinforced Composites (SRCs) – Analysis via Multiple Regression Modelling

2021 ◽  
Vol 36 (5) ◽  
pp. 608-619
Author(s):  
F. Jakob ◽  
J. Pollmeier ◽  
H.-P. Heim
Keyword(s):  
Reinforced Composites ◽  
Molded Part ◽  
Injection Process ◽  
New Process ◽  
One Step ◽  
Injection Molded ◽  
Temperature And Pressure ◽  
Materials Used ◽  
Air Pockets ◽  
Maximum Shear Strength

Abstract A new process to produce back-injected self-reinforced composites (SRCs) is presented. In contrast to other investigations on back-injection of SRCs, a process is presented which allows compacting and back injection of SRCs in one step where the SRCs are partly consolidated only via melt pressure inside the cavity. The mechanical properties of SRCs depend to a large extent on the process parameters of temperature and pressure during manufacture. These parameters are not yet known for back-injected areas. Sensors inside of the cavity measure the influences on the temperature and pressure conditions in the cavity. Initial studies on adhesion were carried out and analysed. For this purpose, shear tests of the back-injected component were carried out and a maximum shear strength of 5.81 MPa was determined for the materials used here. The investigations also show a dependence on the Distance from the Gate (DG) and the Mass temperature (TM). First microscopic examinations show good bonding between the SRC and the injection molded part, with no voids or air pockets in the boundary layer. It can also be seen that successful consolidation takes place in the area of the back injection.

One-Step MIBK Synthesis: A New Process from 2-Propanol

2002 ◽  
Vol 208 (1) ◽  
pp. 114-123 ◽  
Author(s):  
J.I. Di Cosimo ◽  
G. Torres ◽  
C.R. Apesteguı́a
Keyword(s):  
New Process ◽  
One Step

Influence of Process Conditions of Thixomolding® on the Microstructure of Magnesium Mobile Phone Housing

2005 ◽  
Vol 488-489 ◽  
pp. 377-380 ◽  
Author(s):  
Xiao Peng Cui ◽  
Yong Bing Liu ◽  
Zhan Yi Cao ◽  
Xiao Hong Yang ◽  
Wei Liang
Keyword(s):  
Mobile Phone ◽  
Magnesium Alloys ◽  
Process Parameters ◽  
Mold Temperature ◽  
Electronic Component ◽  
Process Conditions ◽  
Thin Wall ◽  
New Process ◽  
One Step ◽  
The Relationship

Thixomolding® is a new process of net shape parts for magnesium alloys in one step, and it is suited to manufacture the thin wall products, especially to the electronic component shells. In this paper, the sample of mobile phone housing is fabricated by 220Tons Thixomolding® machine made by Japan Steel Works. The effects of barrel temperature, screw rotate rate and mold temperature on microstructure were studied. The relationship between process parameters and microstructure was also discussed in this paper.

scholarly journals Ultra-High-Performance Supercritical Fluid Chromatography as a Separation Tool for Fusarium Mycotoxins and Their Modified Forms

2018 ◽  
Vol 101 (3) ◽  
pp. 627-632 ◽  
Author(s):  
Marthe De Boevre ◽  
Christof Van Poucke ◽  
Emmanuel Njumbe Ediage ◽  
Dana Vanderputten ◽  
Anita Van Landschoot ◽  
...  
Keyword(s):  
Supercritical Fluid ◽  
Supercritical Fluid Chromatography ◽  
Mobile Phase ◽  
High Performance ◽  
Solid Phase ◽  
Retention Mechanism ◽  
Fusarium Mycotoxins ◽  
Preparation Step ◽  
One Step ◽  
Filtration Step

Abstract A simple, reliable method for the detection of free and modified Fusarium mycotoxins in beer using state-of-the-art ultra-high-performance supercritical fluid chromatography (UHPSFC) with low-resolution tandem MS (MS/MS) is presented in this paper. The UHPSFC-MS/MS method was developed for nivalenol, deoxynivalenol, 15-acetyl-deoxynivalenol, 3-acetyl-deoxynivalenol, deoxynivalenol-3-glucoside, HT-2 toxin, T-2 toxin, T-2 toxin-3-glucoside, neosolaniol, diacetoxyscirpenol, zearalenone, α-zearalenol, and β-zearalenol and their internal standards deepoxy-deoxynivalenol and zearalanone. Due to the broad range of the physicochemical properties of the aforementioned, the sample preparation step was minimized to avoid analyte losses. Extraction with acetonitrile–water–acetic acid (79 + 20 + 1, v/v/v) and hexane in combination with solid-phase extraction (C18) was followed by a filtration step. After filtration, the extract was evaporated, and the remaining residue was redissolved in a mobile phase for injection (methanol–water; 90 + 10, v/v). A mobile phase consisting of supercritical CO2 and a small portion of methanol was used. The developed multimycotoxin method permits the simultaneous determination of multiple fusariotoxins in an one-step chromatographic run using UHPSFC-MS/MS. SFC is a promising strategy; however, the retention mechanism is complex, leading to the unpredictable nature of elution and to some mycotoxins not being retained on the column. This restricts the applicability of UHPSFC in multimycotoxin analyses. The present study is the first report on the use of UHPSFC for the analysis of free and modified Fusarium mycotoxins.

An Interactive Minicomputer Program for the Indexing and Simulation of Electron Diffraction Patterns

1976 ◽  
Vol 34 ◽  
pp. 542-543
Author(s):  
R.P. Goehner ◽  
W.T. Hatfield ◽  
Prakash Rao
Keyword(s):  
Electron Diffraction ◽  
Real Time ◽  
Pattern Analysis ◽  
Flow Diagram ◽  
Hard Copy ◽  
Time Analysis ◽  
Real Time Analysis ◽  
Transmission Electron ◽  
One Step ◽  
Diffraction Patterns

Computer programs are now available in various laboratories for the indexing and simulation of transmission electron diffraction patterns. Although these programs address themselves to the solution of various aspects of the indexing and simulation process, the ultimate goal is to perform real time diffraction pattern analysis directly off of the imaging screen of the transmission electron microscope. The program to be described in this paper represents one step prior to real time analysis. It involves the combination of two programs, described in an earlier paper(l), into a single program for use on an interactive basis with a minicomputer. In our case, the minicomputer is an INTERDATA 70 equipped with a Tektronix 4010-1 graphical display terminal and hard copy unit.A simplified flow diagram of the combined program, written in Fortran IV, is shown in Figure 1. It consists of two programs INDEX and TEDP which index and simulate electron diffraction patterns respectively. The user has the option of choosing either the indexing or simulating aspects of the combined program.

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