An Experimental Analysis of the Interaction Between Hanged Pipe and Internal Flow

2010 ◽  
Author(s):  
Marcio Yamamoto ◽  
Motohiko Murai ◽  
Shotaro Uto ◽  
Tomo Fujiwara ◽  
Shigeo Kanada ◽  
...  
Keyword(s):  
Experimental Analysis ◽  
Deep Sea ◽  
Petroleum Industry ◽  
Internal Flow ◽  
Drilling Mud ◽  
Well Drilling ◽  
Offshore Pipelines ◽  
Dynamic Forces ◽  
Oil Water ◽  
Phase Fluid

The pipes are playing an important role in the offshore environment. Risers and pipelines are widely deployed by the petroleum industry for the well drilling and hydrocarbons production. Whereas during drilling, a mixture of drilling mud and solids in suspension (rock cuttings) flows through the drilling riser; during the production, mono or multiphase flow (comprising oil, water and gas) takes place within the production system. However up till now, most of investigations on offshore pipelines and risers have neglected the effects of the internal flow and have focused mainly on the interaction among pipe’s structure, hydro-dynamic forces and offshore platform’s motion. This paper deals with the interaction between the pipe structure and its internal flow. An experimental analysis was carried out, in the Deep Sea Basin of the National Maritime Research Institute (Japan), using a model of 10 m length. In this experiment, a mono-phase fluid of liquid and another bi-phase fluid of liquid and solids in suspension are used as the internal flow fluid and a parametric analysis using the internal flow rate and pipe’s oscillating frequency was carried out. Discussion about the experimental results is also included.

An Experimental Study of the Interaction Between Pipe Structure and Internal Flow

2009 ◽  
Author(s):  
Marcio Yamamoto ◽  
Motohiko Murai ◽  
Katsuya Maeda ◽  
Shotaro Uto
Keyword(s):  
Gas Flow ◽  
Petroleum Industry ◽  
Internal Flow ◽  
Scale Model ◽  
Offshore Platforms ◽  
Drilling Mud ◽  
Well Drilling ◽  
Hydrocarbon Production ◽  
Flow Effects ◽  
Reduced Scale

Nowadays pipes are widely deployed in the offshore environment especially in the petroleum industry where rigid and flexible pipes are used for well drilling and hydrocarbon production. Whereas during drilling, a mixture of drilling mud, rock cuttings and sometimes gas flows through the drilling riser, during production mono or multiphase (comprising oil, water and gas) flow takes place within the system. However up till now, most of the studies on offshore pipelines and risers have been focused on the pipe structure and its interaction with hydrodynamic forces and offshore platforms. In particular for numerical computation studies and reduced scale model experiments, the pipe is usually modeled as a tensioned beam and sometimes only the internal pressure is taken into account with other effects due to its internal flow being neglected. This paper deals with the interaction between the pipe structure and its internal flow. In order to verify the internal flow effects, an experimental analysis was carried out not using a reduced scale model. In particular, mono-phase fluid flows into the pipe and a parametric analysis using the flow rate was carried out. Discussion about the experimental results and numerical applications is also included.

A Numerical Analysis of the Internal Flow Effect on the Riser’s Mechanical Behavior

2010 ◽  
Author(s):  
Marcio Yamamoto ◽  
Motohiko Murai
Keyword(s):  
Mechanical Behavior ◽  
Gas Flow ◽  
Petroleum Industry ◽  
Internal Flow ◽  
Scale Model ◽  
Offshore Platforms ◽  
Drilling Mud ◽  
Well Drilling ◽  
Hydrocarbon Production ◽  
Flexible Pipes

Pipes are widely deployed in the offshore environment especially in the petroleum industry where rigid and flexible pipes are used for the well drilling and hydrocarbon production. Whereas during drilling, a mixture of drilling mud, rock cuttings and sometimes gas flows through the drilling riser; during production mono or multiphase (comprising oil, water and gas) flow takes place within the production system. However up till now, most of the studies on offshore pipelines and risers have been focused on the pipe structure and its interaction with hydrodynamic forces and offshore platforms. In particular for numerical computation studies and reduced scale model experiments, the pipe is usually modeled as a tensioned beam and sometimes only the internal pressure is taken into account with other effects due to its internal flow being neglected. This paper presents a study on the influence of the internal flow on the pipe’s dynamics. The mechanical behavior of the pipe is modeled using the Consistent Mass and the Finite Element Method (FEM); the effect of an inviscid internal flow is also included. Numerical simulations in time domain have been carried out. Discussion about the experimental results and numerical simulation is also featured.

Numerical Simulation of a Jumper Conveying Slurry for Deep-Sea Mining

2021 ◽  
Author(s):  
Marcio Yamamoto ◽  
Tomo Fujiwara ◽  
Joji Yamamoto ◽  
Sotaro Masanobu
Keyword(s):  
Experimental Data ◽  
Pressure Drop ◽  
Dynamic Analysis ◽  
Internal Pressure ◽  
Deep Sea ◽  
Petroleum Industry ◽  
Vertical Direction ◽  
Internal Flow ◽  
Horizontal Direction ◽  
Viscous Pressure

Abstract One key technology for Deep-Sea Mining is the riser system. The riser is already a field-proven technology in the Petroleum Industry. However, several differences exist between a petroleum production riser and a riser for Deep-Sea Mining, mainly related to the internal flow. The ore-slurry has a larger density than the hydrocarbons and shall be pumped with a much higher flowrate. The current software tools for riser’s dynamic analysis may include the internal fluid hydrostatic pressure and the centrifugal and Coriolis forces imposed by the bent pipe’s internal flow. However, the internal pressure drop is not calculated. The internal pressure alters the pipe’s effective tension and can alter the pipe’s bending moment changing its mechanical behavior. This article describes a computational script’s development to run embedded in a commercial software for riser’s dynamic analysis. Our script calculates the internal viscous pressure drop along with the jumper. This pressure is then converted into wall axial tension (buckling) and imposed on each node of the jumper’s numerical model. Each simulation case was calculated twice with and without the internal flow viscous pressure drop. The comparison with experimental data revealed that the jumper’s average position has a good agreement among all cases. However, the amplitude caused by the top oscillation showed some discrepancies. Experimental data has the highest amplitude in the horizontal direction, while the simulation without viscous pressure calculation had the smallest. The simulation with our embedded script had intermediary amplitude in the horizontal direction. The vertical direction amplitudes have the same behavior for all cases, but the experimental data showed the highest amplitude.

Evolution of drilling mud systems applied for well drilling on Vietsovpetro JV fields

2019 ◽  
Vol 12 ◽  
pp. 107-111
Author(s):  
A.N. Ivanov ◽  
◽  
O.V. Kryukov ◽  
Vu Van Hung ◽  
Mai Duy Khanh ◽  
...  
Keyword(s):  
Drilling Mud ◽  
Well Drilling

Molecular Simulation Study of Oil-Water Two-Phase Fluid Transport in Shale Inorganic Nanopores

2021 ◽  
pp. 116948
Author(s):  
Wei Zhang ◽  
Qihong Feng ◽  
Zhehui Jin ◽  
Xiangdong Xing ◽  
Sen Wang
Keyword(s):  
Molecular Simulation ◽  
Simulation Study ◽  
Fluid Transport ◽  
Two Phase ◽  
Oil Water ◽  
Phase Fluid

Pipe stick problems of deep well drilling

2021 ◽  
Vol 66 (05) ◽  
pp. 192-195
Author(s):  
Rövşən Azər oğlu İsmayılov ◽  
Keyword(s):  
Drilling Fluid ◽  
Drill Pipe ◽  
Drill String ◽  
Differential Pressure ◽  
Drilling Mud ◽  
Fluid Circulation ◽  
Well Drilling ◽  
Deep Well ◽  
Pressure Pipe ◽  
Bottomhole Pressure

The aricle is about the pipe stick problems of deep well drilling. Pipe stick problem is one of the drilling problems. There are two types of pipe stick problems exist. One of them is differential pressure pipe sticking. Another one of them is mechanical pipe sticking. There are a lot of reasons for pipe stick problems. Indigators of differential pressure sticking are increase in torque and drug forces, inability to reciprocate drill string and uninterrupted drilling fluid circulation. Key words: pipe stick, mecanical pipe stick,difference of pressure, drill pipe, drilling mud, bottomhole pressure, formation pressure

scholarly journals Temperature Augmented Visual Method for Initial Screening of Hydrate Inhibitors

2018 ◽  
Vol 73 ◽  
pp. 1 ◽  
Author(s):  
Tinku Saikia ◽  
Vikas Mahto
Keyword(s):  
Gas Hydrates ◽  
Induction Time ◽  
Drilling Fluid ◽  
Academic Research ◽  
Petroleum Industry ◽  
Visual Methods ◽  
Drilling Mud ◽  
Initial Screening ◽  
Visual Method ◽  
Augmented Method

The formation of gas hydrates in oil & gas pipelines and drilling fluid flow lines is a major issue in the petroleum industry. Gas hydrate inhibitors are normally used to inhibit the formation of gas hydrates in the pipelines/flowlines. Initial screening of hydrate inhibitors and AntiAgglomerants (AA) requires a safe and economical experimental setup/method. Conventional visual method was used for initial screening of hydrate inhibitors in many researches. Some researchers also suggested modified visual methods, but all of them lacks accurate measurement of induction time and found to be inappropriate for experimental solutions like drilling mud, etc. In this work, a temperature augmented visual method was presented which can be used in academic research laboratories for study and initial screening of hydrate inhibitors. This method is capable of parallel screening of inhibitors and determines hydrate induction time precisely. Experiments were conducted to determine the hydrate induction time of different inhibitors using augmented method and compared with conventional visual method. The developed method found to be more precise in determining the induction time of hydrates in all types of experimental solutions.

scholarly journals Estimation of Oil-Water Contact Level Using Different Approaches: A Case Study for an Iraqi Carbonate Reservoir

2020 ◽  
Vol 10 (2) ◽  
pp. 95-113
Author(s):  
Wisam I. Al-Rubaye ◽  
Dhiaa S. Ghanem ◽  
Hussein Mohammed Kh ◽  
Hayder Abdulzahra ◽  
Ali M. Saleem ◽  
...  
Keyword(s):  
Capillary Pressure ◽  
Reservoir Characterization ◽  
Petroleum Industry ◽  
Carbonate Reservoir ◽  
Oil Field ◽  
Accurate Estimation ◽  
Water Contact ◽  
Oil Water ◽  
Original Oil In Place ◽  
Drainage Data

In petroleum industry, an accurate description and estimation of the Oil-Water Contact(OWC) is very important in quantifying the resources (i.e. original oil in place (OIIP)), andoptimizing production techniques, rates and overall management of the reservoir. Thus,OWC accurate estimation is crucial step for optimum reservoir characterization andexploration. This paper presents a comparison of three different methods (i.e. open holewell logging, MDT test and capillary pressure drainage data) to determine the oil watercontact of a carbonate reservoir (Main Mishrif) in an Iraqi oil field "BG”. A total of threewells from "BG" oil field were evaluated by using interactive petrophysics software "IPv3.6". The results show that using the well logging interpretations leads to predict OWCdepth of -3881 mssl. However, it shows variance in the estimated depth (WELL X; -3939,WELL Y; -3844, WELL Z; -3860) mssl, which is considered as an acceptable variationrange due to the fact that OWC height level in reality is not constant and its elevation isusually changed laterally due to the complicated heterogeneity nature of the reservoirs.Furthermore, the results indicate that the MDT test can predict a depth of OWC at -3889mssl, while the capillary drainage data results in a OWC depth of -3879 mssl. The properMDT data and SCAL data are necessary to reduce the uncertainty in the estimationprocess. Accordingly, the best approach for estimating OWC is the combination of MDTand capillary pressure due to the field data obtained are more reliable than open hole welllogs with many measurement uncertainties due to the fact of frequent borehole conditions.

A Micro/Nano Engineering Laboratory Module on Superoleophobic Membranes for Oil-Water Separation

MRS Advances ◽  
2017 ◽  
Vol 2 (31-32) ◽  
pp. 1699-1706
Author(s):  
Hussain Al-Qahtani ◽  
Michael S. H. Boutilier ◽  
Rahul Ramakrishnan ◽  
Rohit Karnik
Keyword(s):  
Petroleum Industry ◽  
Spray Coating ◽  
Titania Nanoparticles ◽  
Water Mixture ◽  
Massachusetts Institute Of Technology ◽  
Water Separation ◽  
Societal Needs ◽  
Oil Water Separation ◽  
Oil Water ◽  
Institute Of Technology

ABSTRACTThis article presents a laboratory module developed for undergraduate micro/nano engineering laboratory courses in the mechanical engineering departments at the Massachusetts Institute of Technology and King Fahd University of Petroleum and Minerals. In this laboratory, students fabricate superoleophobic membranes by spray-coating of titania nanoparticles on steel meshes, characterize the surfaces and ability of the membrane to retain oil, and then use these membranes to separate an oil-water mixture. The laboratory module covers nanomaterials, nanomanufacturing, materials characterization, and understanding of the concepts of surface tension and hydrostatics, with oil-water separation as an application. The laboratory experiments are easy to set up based on commercially available tools and materials, which will facilitate implementation of this module in other educational institutions. The significance of oil-water separation in the petroleum industry and integration of concepts from fluid mechanics in the laboratory module will help to illustrate the relevance of nanotechnology to mechanical and materials engineering and its potential to address some of the future societal needs.

On specification of relaxation time for subsurface rocks composing borehole walls in geothermal well drilling

2020 ◽  
pp. 26-29
Author(s):  
T.Sh. Salavatov ◽  
◽  
Y.I. Safarov ◽  
S.A. Musayeva ◽  
◽  
...  
Keyword(s):  
Relaxation Time ◽  
Pressure Fluctuations ◽  
Borehole Wall ◽  
Stationary Motion ◽  
Circulation System ◽  
Calculation Formula ◽  
Drilling Mud ◽  
Well Drilling ◽  
Time Consumption ◽  
Geothermal Well

The paper makes an effort to specify the relaxation time of subsurface rocks composing the borehole wall during geothermal well drilling justifying theoretical and practical researches. To solve mentioned issues, a theory of dumping of pressure fluctuations in non-stationary motion of drilling mud in the circulation system of well, based on the data of change of pressure and time consumption is applied and as a result a calculation formula obtained. The method has been tested in the well No 245 in Muradkhanly area.

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