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IPTC 2012:International Petroleum Technology Conference
- Conference date: 07 Feb 2012 - 09 Feb 2012
- Location: Bangkok, Thailand
- Published: 07 February 2012
21 - 40 of 358 results
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Measuring and Controlling Torsional Vibrations and Stick-Slip in a Viscous-Damped Drillstring Model
Authors E. Omojuwa, S. Osisanya and R. AhmedFailure of drillstring components due to torsional stresses are caused by torsional vibrations. This paper
investigates the response of the drillstring to torsional vibrations through analysis on an elemental stepped-shaft
drillstring model in a damped medium. The paper directs its analysis to the stick-slip motion which is the most
common form of torsional vibrations in drillstrings; stick-slip motion is defined as the continuous stopping and
release of the bit/BHA due to the irregular downhole rotation prompted by the existing relationship between the
frictional torque and the torque applied from the surface to free the bit.
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Developing New Petroleum Engineers in a Non-Operating Environment
Authors M.I.B. Ibrahim, A.I. Almuhanna and K. Amiri-GarroussiThe paper will briefly explain aspe cts of career development for a new young engineering graduate to become a
petroleum engineer in an international subsidiary of a National Oil Company in a non-operating environment.
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Effects of Syn-depositional Tectonics on Platform Geometry and Reservoir Characters in Miocene Carbonate Platforms of Central Luconia, Sarawak
Authors Ting King King, Bernard J. Pierson, Omar Al-Jaaidi and Paul HagueIt is commonly assumed that the Miocene carbonate platforms of Central Luconia, Sarawak developed and grew on a stable
substratum. This paper documents evidence of syn-depositional tectonic movements in the ‘Mega Platform’ in the northern
part of the Central Luconia Basin. Detailed 3D seismic interpretation techniques consisting of spectral decomposition,
acoustic impedance opacity rendering, and structurally oriented semblance filtering were used to better constrain geological
processes affecting, controlling and modifying the evolution and demise of the platform.
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First Application of Gasified Fluid Drilling in Pakistan
Authors Muhammad Asrar and Shahid MajeedThis paper presents the planning phase, operational results and future recommendations of first well d rilled with
Gasified Fluid Drilling technique in Pakistan.
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Leveraging Emerging Technologies to Increase Production from Unconventional Reservoirs: Case Study of India
Authors Yogesh Kumar Choudhary and Arunesh KumarWith a sustained growth rate of 6.2%, India is set to become the third largest economy following the USA and Chinaby 2035.
In accordance with the growth rate, it is estimated that India's import dependence is likely to increase from the current level
of 72% to approximately 90% by 2035. With a large dependency on imports to meet commercial energy requirements, the
demand/supply gap in oil and gas in Indiawill inevitably grow.Unconventional energy resources are becoming increasingly
more important in the quest for energy security because of the continuing decline of production from proven reserves (4 to
6% decline has been observed in mature fields), accompanied by the increasing price of crude oil and natural gas. Potential
sources of unconventional energyin India, proven or speculated, are coalbed methane (CBM), shale oil/gas, tight gas, and gas
hydrates.
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Monobore Solid Expandable Liners – Redesigning Wells for a More Economical and Operational Benefit
Authors Asim Siddiqui and Patrick YorkSolid expandables liners have historically been viewed as contingency liners when operators encounter trouble zones, whether
due to setting a conventional casing string high or covering unstable or loss of circulation zones or to improve drilling
margins. In that event, the method of operation changes from drilling the well to saving it and still reaching total depth (TD)
with the designed production string. At this point the expandable liner typically is run in a high-risk situation when the
operator is attempting to save the well. It is more beneficial to design expandable system(s) in a hole section further up the
wellbore where the liner would be run in a much lower risk environment.
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Optimized Planning and Placement of Horizontal Wells Improved Well Productivity and Controlled Water Cut in Umm Gudair Field, Kuwait
Authors T.K. Banerjee, Eman H.E.Fadli, Fazal Ahmed, T. Al-Khalifa and Nasser FaisalMinagish Oolite reservoir of Umm Gudair field, West Kuwait is a cretaceous carbonate reservoir having active
aquifer support. Maintaining plateau rate of production with infill drilling is constrained by increasing water cut due
to absence of effective stratified layers. Many of the traditional water shut off techniques and selective perforations
were partially successful in delaying upward movement of water in wells. But the recent horizontal drilling activity
initiated in past 6 years has improved productivity and reduced water cuts in wells.
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Burgan Multilateral Campaign: A Success Story in Development of a Complex Siliciclastis Reservoir in Kuwait
The multilateral well technology was used for the first time in Albian Third Sand reservoir of the super-giant Greater Burgan
Field of Kuwait. The reservoir is on production for more than 60 years with conventional development techniques. The
multilateral drilling technology was adopted particularly for exploiting the heterogeneous and complex units within Third Sand
Upper member of Burgan Formation.
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Extending Formation Tester Performance to a Higher Temperature Limit
Exploration and development wells are increasingly drilled to deeper depths and lower porosities, in hotter formations.
These conditions increase the challenges for Formation Tester’s (FT’s) to acquire accurate formation pressures in a timely
and cost efficient manner. One of the most important constraints on current FT acquisition is the downhole formation
temperature.
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Experiment and Simulation of Indigenous Microbial Enhanced Oil Recovery (IMEOR)
More LessUnder the laboratory simulation of HTHP reservoir (65
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Combining Conventional and Wireline Formation Testing for Improved Reservoir Characterization
Authors S. Ramaswami, H. Elshahawi and A. El BattawyWell testing has long been a valuable tool for the petroleum industry. The practice continues to be widely used today, but an
increasing number of situations arise in which conventional well tests can be impractical due to cost, logistical or
environmental constraints. For instance, in Arctic areas, weather conditions may dictate a time window beyond which
operations must cease. In such cases, a wireline formation tester (WFT) test may present a viable alternative to acquire
formation fluid samples and pressure transient data (WFT-PTA).
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Improving SAGD Performance Combining with CSS
Authors E. Ghanbari, S. Mighani, E. Shaabani and R. Alipour Yeganeh MarandThere are large resources of heavy oil reservoir with high viscosity that cannot be produced by natural depletion. The main
obstacle to produce from these large deposits of heavy oil and bitumen resources is the high viscosity of these oils. This large
amount of oil can be produced considerably by thermal EOR (Enhanced Oil Recovery) methods. The Steam Assisted Gravity
Drainage (SAGD) and Cyclic Steam Stimulation (CSS) process has been found as a promising EOR process to recover
bitumen and heavy oils.
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Application of Permanent Reservoir Monitoring Data (DTS* & PDG*) in a Mature Offshore Malaysian Oilfield, for Production Optimisation and Workover Control
Authors K.F. Gordon Goh, M.Z. Zaini, T.K. M.Gee, P. A. Whitney, A. S. Molavi and M.M. SalimPermanent Downhole Reservoir Monitoring and Surveillance is becoming fundamental for optimal reservoir management,
without the requirement to re-enter the well. In order to identify zonal allocation from multi layer reservoirs, DTS and zonal
PDG data have been integrated to provide a cost effective alternative to conventional wireline logging (e.g. PLT), thereby
mitigating oil deferment and intervention risks.
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Avoiding Sustained Casing Pressure in Gas wells using Self Healing Cement
Khuff gas reservoir is one of the most challenging gas fields in the Middle East; in the past several wells suffered from
sustained casing pressure due to the downhole stresses and other contributing factors.
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A Reservoir Management Tool for an Omani Fractured Carbonate Reservoir: A Case Study
More LessThis paper presents a case study of developing a reservoir management tool (a water coning
correlation) to monitor the oil rim thickness and position in a giant densely fractured carbonate
reservoir in Northern Oman. The production mechanism in the field is Gas Oil Gravity Drainage
(GOGD), with crestal gas injection to maintain the reservoir pressure and dedicated aquifer pumpoff
wells to control the oil rim position.
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Exposure to Phosphate-based Completion Brine under HPHT Laboratory Conditions Causes Significant Gas Permeability Reduction in Sandstone Cores
More LessHigh-density potassium phosphate and potassium/cesium formate brines were tested in an advanced core flood test rig for their
compatibility with low-permeability sandstone containing simulated formation water under HPHT conditions. The tests were
carried out at a temperature of 175oC (347 oF) and pore pressure of 5,800 psi. Compatibility was determined by comparing the
relative gas permeability of the cores before and after exposure to the brines under HPHT conditions.
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How New Measurement, Tomographic and Visualisation Techniques Help Operators Improve Recovery in Older and Smaller Fields
More LessTwo of the biggest challenges operators face today is improving recovery from older fields; and making smaller
fields economically viable. Today more than 70% of oil and gas production comes from fields over 30 years old
and in regions, such as the North Sea, there has been a proliferation of smaller, producing fields.
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Integrated Reservoir Characterization And Development Through An Improved Workflow Approach To Couple A Three Dimensional Seismic Study Results And Reservoir Numerical Simulation: Revealing The Effect Of Structural Features In La Victoria Field
Authors K. Castillo, M. C. Urdaneta and Y. AskoulA detailed seismic interpretation for reservoir characterization is a powerful tool to obtain information in the interwell
area for the purposes of field m anagement and development. This paper presents a workflow approach to
characterize La Victoria Field reservoirs, which belongs to Apure State in the Southwest of Venezuela, particularly
Escandalosa M Sand of Escandalosa Formation. The available 3D seismic data have been used to predict smallscale
faults as well as presence of internal compartments where undrained zones or bypassed oil might be located
in a mature oilfield. Additionally, reservoir engineering techniques as numerical simulation helped to verify reservoir
parameters estimated by history match ing in a black oil simulator, such as the sealing character of some faults,
identified from seismic interpretation.
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Structural Reliability: Assessing the Condition and Reliability of Casing in Compacting Reservoirs
Authors Prasongsit Chantose, Paolo Gardoni, Jerome Schubert and Catalin TeodoriuCasing has a higher likelihood of failure in compacting reservoir than in a typical reservoir. Casing fails because reservoir
compaction induces compression and shear stresses onto it. The compaction occurs as reservoir pressure depletes during
production. High compacted reservoirs typically are composed of unconsolidated, overpressured rocks such as chalk,
diatomite, and sandstone. Pore pressure depletion increases effective stress, which is the rock matrix stress pushing upward
against overburden pressure. Effective stress may exceed rock compressive strength, inducing compaction. Wells in
compacting reservoirs are likely to fail and to have high deformation rates.
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A Combination of Perforating Technologies to Maximize Well Productivity and Minimize Rig Time
Authors Nishant Chadha, Carlos Baumann, Harvey Williams and Ryosuke YokoteIn this paper we describe the challenges and the techniques used to deliver zero perforation skin wells in the
Blacktip gas field offshore Australia. We describe the software models used to evaluate both the well perforation design and
the operational risks, and the approach used to reduce rig time. Software modelling based on historical experimental data and
newly developed rock perforating models, showed that cleanup with dynamic underbalance would deliver the highest well
productivity. Minimum rig time utilization was achieved with wireline conveyed guns.
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