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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
101 - 120 of 358 results
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Study and Application of Carbonate Reservoir Characterization in Block-B on the Eastern Margin of the Pre-Caspian Basin
Authors Chen Hongtao, Li Jianying, Yang Feng and Li YibaoCarbonate sedimentary facies division and reservoir prediction are the problems that have obsessed the
petroleum industry for many years. Combined with the regional sedimentation evolution background of Block-
B on the eastern margin of the Pre-Caspian Basin and reservoir features dominated by primary porosity
indicated by drilled well, this paper performs the stratigraphic sequence division under the carbonate
platform sedimentation background firstly, and secondly, performs division and optimization of seismic
facies and sedimentary microfacies within different system tracts, and indicates that tidal flat and dolomite
flat microfacies of restricted platform subfacies within the high system tract of sequence KT-I are the most
favorable reservoir development facies in Block-B.
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Seismic-While-Drilling Checkshot Survey on High-Inclination Well— Beyond the Time and Depth
Authors Aqil Ahmed, Teck Kean Lim, Walter Wuertz, Maneerat Kanaree, Wayne Pirie and Pieter J. RebelSummary not available
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FLNG Development: Strategic Approaches to New Growth Challenges
More LessUnderneath the ground, the world still left a quarter of its natural gas resources (approximately 2 billion TCF)
undeveloped or “Stranded” in offshore. Many gas fields were discovered in many decades ago, but the resources
of those fields could not commercially be justified for the development so they were classified as marginal fields.
One of the most promising solutions known as “Floating Liquefied Natural Gas or FLNG” is lately growing and
foreseen as potential technical to monetize these marginal gas fields offshore and near-shore. We are well aware
of the potential in FLNG technology and consider it as the one of the most important initiatives to lead our
organization to achieve target growth.
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Heterogeneity of the Hydrocarbon Distribution in Tertiary Sediments of North-East Sarawak
Authors Mohd Syamim Ramli and Eswaran PadmanabhanThere are tremendous spatial and temporal variability within the sedimentary rock types of the Belait (Early-Mid
Miocene) and Lambir (Mid-Miocene) Formations in North Eastern Sarawak. With the current renewed interest in
oil and gas exploration in this part of Malaysia, evaluating the distributions of hydrocarbon resources in both
Formations will be of valuable interests for the industry.
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Improved Petrology & Petrophysics Characterization of Complex Siliciclastic Reservoirs through Integrated Logs Analysis- Case Study in South China Sea
Authors Cai Jun, Guo ShuSheng, Gao YongDe, Li HuiGeng and Xian ChengGangPetrology attributes of reservoir rock are fundamental elements resulting varied petrophysical responses, and controlling
reservoir flowing performance. This paper presents a workflow characterizing complex sand-shale sequenced reservoir with a
case study in South China Sea. An integrated approach of integrating elemental neutron capature spectroscopy, formation
micro-resistivity image and nuclear magnetic resonance (NMR) data are used to characterize reservoir petrology attributes of
mineral composition, grain size, sorting and layering fabric; with improved understanding of state dependency problems, such
information is of more use in petrophysical evaluation and reservoir producibility simulation. The information can also be
integrated into further geological study to improve the certainty of model. Such an integrated approach is proven an effective
way to reveal the reservoir intrinsic properties, better to understand interrelationship of sedimentary model, petrology and
petrophysics of target formation, and more accurately to delineate reservoir.
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Single-Well Chemical Tracer Test Experience in the Gulf of Guinea to Determine Remaining Oil Saturation
Authors C. Romero, N. Agenet, A.N. Lesage and G. CassouThe Single Well Tracer Test (SWTT) method has proved to be a reliable technique to measure Remaining Oil saturations
(ROS) consistently. The technique is based on the chromatographic separation of two tracers, a tracer that partitions into the
oil and that hydrolyses in the reservoir, to generate the second tracer, which remains exclusively in the water. Both tracers
are produced through the same well in an interval of a few days and the ROS is determined by means of the difference in
their arrival times at the wellhead.
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Exploring the Interwell Reservoir Space with Crosswell Imaging and Interpretation: An Example of Multi Scale Data Integration from Indonesia
Much has written about seismic interpretation and characterisation of the subsurface and until recently, this topic
has focused on the traditional techniques such as surface seismic and vertical seismic profiling (VSP). One critical
limitation in combining these with well based measurements is the lack of understanding as to what happens to
the seismic signal both away from the well and at a finer resolution (reservoir space) than the surface based
methods. Crosswell seismic helps to bridge the gap in both directions; log property mapping and upscaling these
to field wide scale and seismic property mapping or downscaling surface seismic properties for well correlation.
By nature of the measurement, crosswell provides higher resolution images of the interwell region that augments
the seismic characterisation of the subsurface.
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Hybrid Power Generation for Offshore Wellhead Platform: A Starting Point for Offshore Green Energy
More LessThe purpose of this paper is to present the DC power supply for unmanned remote wellhead platforms (WHP). In several
recent WHP projects, there are a number of difference aspects in Bongkot and Arthit Fields in the PTTEP’s Gulf of Thailand
and one of them is the DC power supply. PTTEP by Wellhead platform department intends to standardize the design of DC
power generation for Generic Wellhead Platforms (Generic WHP) for either Bongkot or Arthit fields.
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Gas Flare Reduction through Operational Enhancement and Innovative Modification and Projects
Authors Ali Hussain Al-Kandari, Ashok Kumar and Omar SadeqDescription:Kuwait Oil Company (KOC), over the past few decades has significantly increased the Oil
production to meet the ever increasing global energy demand. In this process, the production of
associated gas has also gone up many folds, surpassing the Gas handling & exporting capabilities. KOCWest
Kuwait(KOC-WK), surface handling capacity expanded by three folds in 2001 while the
associated gas handling facilities was short of requirements due to improper gas production estimates.
This resulted in significant gas flaring, more than 70%, leading to substantial revenue loss and
environmental impact.
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3D Multi-scale Tomostatics using First Arrivals
Authors Hua-wei Zhou, Zhihui Yan and Fang YuanTomostatics is a technology to estimate a source of error in seismic imageries called near-surface
statics, which are spurious timing variations of seismic reflections caused by the lateral variations in
topography and the thickness of the weathering layer of extremely low seismic velocities. Most tomostatics
methods use first arrivals of seismic data to invert for a near-surface velocity model and estimate the static
corrections based on the model. In this paper we present a 3D tomostatics method based on deformable layer
tomography (DLT) using first arrival data.
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Integrating The Geophysical Characterization Of Seismic Thin Beds With Stochastic Reservoir Modeling: A Case Study From The Kutei Basin (Offshore Kalimantan, Indonesia)
Authors G.R. Cavanna, E. Caselgrandi, E. Corti, A. Amato del Monte, M. Fervari, M. Bello, J. Aruan and C. GoldingIn exploration plays driven by DHI, seismic thin beds are common targets. When resolution capabilities are comparable to
isochrones of remarkable elastic contrasts, reflections tend to fall around tuning thickness, where interference phenomena
prevent a correct calibration of amplitudes to reservoir properties. If a de-tuning step is not applied in seismic characterization,
wrong estimation of reservoir properties and pay thickness may lead to inaccurate volumetrics and misleading geologic
models.
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Design, Implementation and Performance of a Down-Dip WAG Pilot
Authors Manoj K. Choudhary, Bimal Parekh, Ed Dezabala, Dustin Marks, E. Pujiyono and Judith ZambranoWater-alternating-gas (WAG) injection is an enhanced oil recovery (EOR) method aimed at increasing sweep efficiency by
contacting zones that are not adequately swept by water injection and by increasing microscopic displacement efficiency as
gravity-aided WAG injection often gives lower remaining oil saturation. WAG performance also depends on whether it is updip
or down-dip injection. Most WAG case studies available in the literature are up-dip WAG injection and most fields with
WAG are in North America. This paper will present a case study of down-dip WAG in a field offshore West Africa.
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Comparison of Fluid Prediction Success between AVO and Bright Spot Techniques in the Marco Polo Field, the Gulf of Mexico
Authors Krongrath Suwannasri, Robert Tatham and Kyle SpikesBright spot amplitude anomalies in seismic data are common indicators of natural gas; however, an interpretation based
purely on these amplitude anomalies often yields a false indication of gas-saturated sands. A data set from the Marco Polo
field, the Gulf of Mexico, demonstrates this problem. A discovery well was drilled into a sequence of bright spot anomalies
that were indeed gas-saturated sands.
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Sequence Stratigraphy of Clastic Overburden of the Miocene Carbonate Gas Province in Central Luconia, Offshore Sarawak, NW Borneo: Implications for Hydrocarbon-Retention Capacity
Authors Eduard Kosa, Amirool Hafrez, Kenneth Boey, Anuar Azhar and Geoffrey WeeCentral Luconia, offshore NW Borneo, is a mature gas province with over 45TCF of g as discovered to date in
Miocene carbonate build-ups buried under Miocene-Recent deltaic clastics. Most commercial discoveries to date
are in carbonate platforms whose large areas contain substantial hydrocarbon volumes even with relatively short
columns. However, the re maining prospectivity resi des mostly in pinnacle-shape carbonates where commercial
volumes require long hydrocarbon columns (Fig. 1A).
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Advancement and Application of Thermal Recovery Technology in Heavy Oil Reservoir in Shengli Petroleum Province
Authors Sun Jianfang, Li Zhenquan and Wu GuanghuanThe main features of heavy oil reservoir in Shengli petroleum province are as bellow: (1) deep reservoir (
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Classification of Microporosity in Carbonates: Examples from Miocene Carbonate Reservoirs of Central Luconia, Offshore Sarawak, Malaysia
Authors Md Habibur Rahman, Bernard J Pierson and Wan Ismail Wan YusoffMiocene carbonate reservoirs may contain appreciable amount of microporosity in grain, cement or matrix. Depending on the
crystallometry and morphometry of micrite particles, microporosity can vary both in amount and in nature. Different kinds of
micrite microtextures may produce different types of microporosity. This study proposes a classification of micrite
microtextures and microporosity.
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A Pragmatic Approach to Enhanced Performance of Slim Mono-Bore Wells
More LessContinuous development and refinement of e-line based well intervention methods help push the performance envelope and
expand the possibilities for optimizing reservoir drainage. The light and agile approach increasingly adds a new dimension to
reservoir management as well intervention becomes viable. In general the resources required to perform production enhancing
well intervention have been reduced, which again has a direct impact on the potential revenue.
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On the Concept and Challenges of Water Saturation Determination and Modeling in Carbonate Reservoirs
Authors Rahim Masoudi, M Hafidz A Halim, Hooman Karkooti and Mohamad OthmanWater saturation in the reservoir is commonly determined by interpretation of the electrical resistivity measurements using the
Archie’s law. The relationship of water saturation and resistivity index is usually characterized by a constant and unique
saturation exponent (i.e. n) for whole reservoir. However, our study in line with various researches in open literature have
shown the dependency of the n exponent to different parameters including the saturation history, wettability, brine salinity and
pore size/type/geometry. This could be among the source of error and challenges in reconciling the core and log derived water
saturation especially in carbonate reservoirs which may lead to unreliable initial volumetric assessment and subsequent
prediction scenarios.
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Geophysical Attributes to Improve the 3D Geopressures Prediction in HP/HT Environment
Authors Patrizia Cibin, Marco Mantovani and Anna MogliaThe scope of the present work is to predict the pore pressure based on seismic attributes for an explorative well
to be drilled in a complex area in terms of structural geology and pressure regimes.
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