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IPTC 2008: International Petroleum Technology Conference
- Conference date: 03 Dec 2008 - 05 Dec 2008
- Location: Kuala Lumpur, Malaysia
- Published: 03 December 2008
51 - 100 of 303 results
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Seismic Expression of Loss Zones Within Carbonates of the Browse Basin
By M.R. PowerThis integrated study documents the drilling hazards associated with drilling through the complex overburden geology of the
Browse Basin (Fig. 1). Previous drilling campaigns by other operators in the region have encountered severe problems when
drilling riser-less with seawater and viscous mud sweeps through unconsolidated sands of Early Tertiary age.
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Tackling Gas Field Decline with Efficient Chemical Water Shut-off : Successful Application on Peciko Field (East Kalimantan, Indonesia)
Authors A. Armon and L. RiyantoHigh water production in a gas well could significantly
reduce gas production due to high friction losses in the
tubing, the effect of water blocking in front of
perforations and formation damage due to water, which,
eventually, could lead to a significant loss of recoverable
reserves. Selective mechanical water shut-off , (i.e. casing
patch), the main technique used to solve this problem so
far, has some disadvantages, mainly reducing the inside
diameter of the production tubing which makes future
mechanical water shut-off of the deeper reservoirs more
difficult. Chemical water shut-off is the preferred solution
to this problem.
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Wellbore Stability Predictions Using Mechanical Earth Model—A Case Study for Okan Field, Offshore Nigeria
By X. YiOkan field is one of the oldest fields being developed in
offshore Nigeria. Geomechanics challenges with further
development include drilling through severely depleted
shallower reservoirs, high-angle penetration through
sloughing shales, and horizontal wells. Significant
downtime due to tight hole, packoff, and stuck pipe was
experienced in several wells drilled recently, which
resulted in significant extra capital expenditure.
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Optimization and Rejuvenation of Mature Assets: Challenges and Solutions for Water Control in Gas Wells
Authors F. Wahid, P. Mukerji and Z. ZaoualiAs more fields advance towards the later stages of their life, there is a compelling drive to optimize production. It is necessary
to understand the changing reservoir performance over time and therefore proactive surveillance plays a key role in achieving
production optimization.
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Advanced Wells: A Comprehensive Approach to the Selection between Passive and Active Inflow Control Completions
Authors F.T. Al-Khelaiwi, V.M. Birchenko, M.R. Konopczynski and D.R. DaviesAdvances (from conventional wells to horizontal and then multi-lateral) in well architecture for maximising reservoir contact
have been paralleled by advances in completion equipment development of both "Passive" Inflow Control Devices (ICDs)
and "Active" Interval Control Valves (ICVs). These devices provide a range of fluid-flow control-options that can enhance
the reservoir sweep efficiency and increase reserves. ICVs were initially employed for controlled, commingled production
from multiple reservoirs; while ICDs were developed to counteract the "Heel-Toe" Effect. The variety of their reservoir
applications has since proliferated, so that their application areas now overlap. It has become both complex and time
consuming to select between ICVs or ICDs for a well’s completion.
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Resolving Created, Propped, and Effective Hydraulic Fracture Length
Authors C.L. Cipolla, E.P. Lolon and M.J. MayerhoferRecent advances in hydraulic fracture mapping technologies have provided a wealth of information on the created fracture
length in numerous geologic settings. Prior to such measurements, fracture length was estimated using "un-calibrated" fracture
propagation models––but there was significant uncertainty in the results that cascaded into subsequent production analyses.
However, we also need to understand how the created fracture length relates to the location of proppant in the fracture and the
producing or effective length to evaluate well performance and improve stimulation designs. Unfortunately, the advanced
fracture mapping technologies that today provide accurate measurements of the created fracture length cannot provide any
insights (yet) into the propped and effective fracture lengths. Advanced production data analyses, pressure transient testing,
and/or numerical reservoir modeling are required to determine the effective fracture length.
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Prospecting and Modelling the Deepwater Turbidite Through Integrated G&G Studies
Authors M.H. Liau, K. Waters, H.D. Johnson and C.A.L. JacksonThe study was focused on the Sheryl field located in Block 21/23a, Central North Sea, UK. This field was
discovered in the Eocene Tay deepwater turbidite reservoir. A robust conceptual geological model was constructed
via an integrated approach of utilising the rock physics forward modelling, seismic attribute and geological data for
the purpose of further prospect evaluation and static model building.
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Lessons Learnt and Experiences Gained in Developing Heavy Viscous Oil Field Using Pattern Waterflood: Case History if a Field in South Oman
Authors V. Gupta, C. Barrio and K. MahrooqiThe paper describes the history of a successful field
development of a complex heavy oil field in south Oman
and illustrates the changing development philosophy
dictated by the field behaviour.
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Integrated Modeling and Statistical Analysis of 3-D Fracture Network of the Midale Field
Authors D. Bogatkov and T. BabadagliAs the maturation of conventional oil reserves pushes the industry to explore challenging reserves, state-of-the-art reservoir
characterization becomes an integral part of any exploration and production venture. Naturally fractured reservoirs are good
examples of such challenging fields. Oil recovery performance estimation from such reservoirs requires a good understanding
of reservoir structure and its effect on the dynamics of the process. Addressed in this work is one of the critical issues for
fractured reservoirs—that is characterization and 3-D modeling of a fracture network.
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Sequence Stratigraphy Approach to Identify New Play and Evaluation of Petroleum System in Blocks 102 & 106, Song Hong Basin, Vietnam
Authors H. Harun, O.A. Mahmud and J. UnirBlocks 102 & 106 are located in the Song Hong Basin, offshore, Northern Vietnam in water depth of 25 to 30 meters
(Figure 1). Petronas Carigali Overseas (V) Sdn. Bhd. (PCOSB) is the operator of the blocks with a 50% working interest. To
date, PCOSB has acquired about 1054km2 of 3D data and drilled three exploration wells. The first well was drilled in 2004
with minor oil and gas discovery in the Middle Miocene shallow marine sand.
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Life Cycle of a Depletion Drive and Sour Gas Injection Development: An Example from an A4C Reservoir, South Oman
Authors B. Haynes Jr., N. Kaura and A. FaulknerA field in South Oman discovered in 1978 is an over-pressured sour oil reservoir. Since first oil
began in 1982, the field will has gone through three stages of development during its life. These
can be summarized as follows; pressure depletion, pressure maintenance with sour separator gas
plus sweet make-up re-injection, pressure maintenance with sour separator gas plus sour makeup
gas injection from other fields
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Constraining 2-D Maps to 3-D Reservoir Descriptions—Field Study
More LessIt is well established in reservoir description process that coarser scale of the data has less uncertainty associated with it. For
example 3D seismic data may provide information about column average porosity data. Many procedures in the literature are
developed for integrating such column averages in 3D property distribution.
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Moving Closer to Real-Time Field Management With Self Organizing Wireless Technology
Authors P. Schwarz and W. BakerThe upstream production segment of the oil & gas industry is currently experiencing many pains ranging from significant
decreases in production, increases in operating & maintenance costs, and increasing human, asset, and environmental safety
risks.The impact of these challenges is reducing the profitability for the producer and is also being transferred all the way
down to end consumer in high natural gas and oil prices.
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Using Open And Cased Hole Sonic Anisotropy And Geomechanics Modeling For Hydraulic Fracturing Evaluation: A Case Study - Carmópolis Field, Northeast Brazil
Authors C.M.C. Almeida, R.L.C. Melo, B.B. Holzberg and C. GuimaraesHydraulic fracturing plays a very important role in these mature and complex geology fields located onshore northeast
Brazil – Carmópolis and Sirizinho Fields – on the revitalization of the oil production. The purpose of this work is to
demonstrate the benefits of applying an integrated analysis for a hydraulic fracturing evaluation, that is performed using a
workflow including time-lapse Sonic Anisotropy and Flexural Waveform Dispersion Analysis (open hole and cased hole)
which main objectives consisted on the generation of a horizontal stress map for the studied area and an accurate
measurement of the hydraulic fracture heights on the borehole wells together with a representative Mechanical Earth Model
(MEM).
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Fracture Conductivity Using Emulsified Acids: Effects of Emulsifier Concentration and Acid Volume Fraction
Authors S.H. Al-Mutairi, A.D. Hill and H.A. Nasr-El-DinNone uniform acid etching of the face of the fracture is the primary cause of fracture conductivity in acid fracturing. The
retained conductivity of the fracture after the acidizing depends on many factors some pertaining to the rock texture, some to
the acidizing conditions and others to the treating fluids. Previous research focused on the texture of rock and acidizing
conditions such as flow rates, temperature and contact times. These parameters along with the type of acid used proved to
affect the fracture conductivity as was shown in previous research. This paper focuses on the fracture conductivity after
acidizing it with the emulsified acids. The objective of this work was to study the effect of droplet size, acid volume fraction
and emulsifier concentration on the fracture conductivity.
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St. Joseph Field Waterflood Project: Fractured Water Injection Using Smart Well Technology
Authors D. Harris, N.G. Du Rieu and K.I. RollettSt Joseph is a mature oil field offshore Sabah, Malaysia. It has been on production since 1981, gas injection started in 1996. A
large re-development project is planned to install water flooding and restore offshore living quarters. First water will be
injected in 2010.
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Smart Gas Production System Optimising Gas Delivery for Sarawak
By M. WongThe Smart Gas Production System (SGPS) is an integrated production system model of the offshore Malaysian Sarawak gas
production network . The model combines reservoir, wellbore and surface network information to optimise gas production to
the onshore processing facilities at Bintulu. The unique feature of the model is it also takes into consideration the gas demand
for the overall network as well as requirements of the individual gas contracts. This paper will concentrate on the features of
the integrated model, complexities of the Sarawak production system and how the model is used to meet LNG delivery
demand.
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Recent CSEM Learnings in Deepwater Borneo
More LessControlled Source Electromagnetic (CSEM) is an emerging technology with the potential to provide detailed resistivity images
of the subsurface. Following a string of successes with the deployment of CSEM and drilling performance in DW Borneo in
2004, CSEM data was acquired over a number of similar structures in 2006. Proprietary inversion techniques indicated the
possible presence of a shallow surface resistive body, while hinting at the presence of slightly elevated resistivities at depth.
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Adaptive Parallel Reservoir Simulation
Authors P. Lu, J.S. Shaw, T.K. Eccles, I.D. Mishev, A.K. Usadi and B.L. BecknerThe availability of multi-core CPUs for personal computers makes desktop parallel computing a reality. Parallel computing
for reservoir simulation creates the opportunity for significant run time reduction but also introduces additional technical
challenges, particularly in the areas of load balancing and general algorithmic robustness.
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Bubut - A Near Field Exploration Success, Inboard Brunei
Authors Z.H. Ahmad, E.S. Hassan, K. Raghavan, I. Donaldson, H. Kooper, G. Maier, M. Dean, C. Tucker and S. GloverBrunei Shell Petroleum (BSP) recently discovered Bubut (BU), a significant gas accumulation
in its mature heartland and close to liquefied natural gas (LNG) facilities. The current
commercial focus on gas raised the significance of the deep gas-bearing sequence which was
first identified in 1983.
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Oil Sands Reservoir Characterization in Athabasca, Canada
Authors A. Takahashi and T. TorigoeReservoir characterization was conducted by combining geological and geophysical methods in the oil sands area, Athabasca,
Canada. For the production of bitumen from the reservoir 200 to 500 meters in depth, the Steam Assisted Gravity Drainage
(SAGD) method (Steam Injection EOR) has been adopted as bitumen is not movable at the original temperature. It is essential
to understanding the detailed reservoir distribution as bitumen is produced just from the vicinity of the producing wells by the
SAGD method.
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Geochemical Evaluation of Reservoir Compartment, Effective Pay Zone and Origin of Gas Seepage in Production Site Using Gas Molecular and Isotopic Composition
More LessGas compositional and isotopic analyses were performed for cuttings-adsorbed gases densely collected by headspace gas
method from the wells drilled in Northeast Japan to identify hydrocarbon-charged intervals, assess vertical
compartmentalization, and clarify effective pay zones in commingled production. Molecular and carbon isotopic compositions
of gases usually provide information on their origin, maturity, compositional change due to migration, and extent of
biodegradation.
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Natural Gas Transportation Infrastructure Concepts
More LessNatural gas is rapidly gaining ground with its reputation as an alternative environmentally friendly fuel source.
Currently major gas exporting countries are already exporting to major markets in Asia and Europe. Natural gas
can be transported in a gaseous, liquid or solid phase; however, the infrastructure needed to transport gas via
pipelines or in its liquid form as LNG is expensive.
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Source and Reservoir Rock Distributions in Coal-Bearing Non-Marine Sediments within a Sequence/Tectono-Stratigraphic Framework: Implications for Non-Marine Rock Exploration
More LessCoal-bearing non-marine sediments are one of major targets of hydrocarbon exploration, as it contains high source- and
reservoir-rock potential. Since non-marine sediments are more heterogeneous in general than marine sediments, this paper
attempted to construct a realistic and practical model for source and reservoir rock distributions in non-marine sediments
within a sequence/tectono-stratigraphic framework, which focuses on controlling factors on the distribution patterns. This
study selected 3,000 m-thick Eocene coal-bearing non-marine sediments in Hokkaido, Japan as a case study field to collect
basic data for constructing and testing the source- and reservoir-rock distribution model. In addition to sedimentological field
analysis, geochemical source-rock potential analysis was conducted, and relevant published data were also considered to
obtain a comprehensive model.
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3D Seismic Geomorphological Analysis of Submarine-Fan Turbidite Reservoir Distributions and Shape Variations Using Seismic Facies and Sedimentological Information: Examples from Active Margin Basins
Authors O. Takano, M. Nishimura, T. Tsuji, T. Saeki and T. FujiiRecent development of 3D seismic technology enables to visualize three-dimensional distributions of subsurface reservoir
rock bodies. It is expected that linking this technology to sedimentological concept and methods such as depositional systems
and sequence stratigraphy leads to realistic and efficient solutions in reservoir distribution analysis, since such genetic process
information provides a guideline for better interpretation and evaluation.
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An Integrated Approach to Field Surveillance Improves Efficiency in Gas Lift Optimization in Bokor Field, East Malaysia
Authors G. Kartoatmodjo, R. Strasser, F. Caretta, M. Jadid, G. Bakar and J. LiewProper fieldwide production surveillance for artificial lift is critical in brown field operations to ensure optimum field
production and efficiency. Using appropriate processes, tools and technology, production surveillance is able to be conducted
in efficient manner. These tools play an important role in well diagnostics to cater for appropriate production optimization for
the field.
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A New Three-Phase Oil Relative Permeability Simulation Model Tuned by Experimental Data
Authors B. Yuen, A. Siu, N. Bukhamseen, S. Lyngra and A. Al-TurkiThe measurement of three-phase displacement involves varying two independent saturations. Therefore, recording the
relative permeability for all possible three-phase displacement combinations in the reservoir becomes impractical. A common
practice utilizes two-phase data to estimate three-phase relative permeability in the reservoir simulator. Most three-phase oil
relative permeability models used in commercial simulators do not contain the flexibility of tuning with measured
experimental data.
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Crosswell Electromagnetic Tomography: from Resistivity Mapping to Interwell Fluid Distribution
Authors A.F. Marsala, S. Ruwaili, S.M. Ma, Z. Ali, M. Buali J.-M. Donadille, S. Crary and M. WiltA crosswell electromagnetic (EM) technology trial project has been conducted in Haradh field in Saudi Arabia, located in the
southern part of Ghawar field. The project objective is to map the fluid distribution and monitor the movement of injected
water. Crosswell EM resistivity is one of the technologies that can be deployed for deep reservoir surveillance during
hydrocarbon production.
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Semi-Analytical Study of Production of Gas Hydrates and Their Techno-Economic Uses
Authors I. Kurawle, M. Kaul, Z. Amin and N. KulkarniGas Hydrates being projected as the next most important source of energy are object of immense research activity. The study
relates to an analytical review of the conditions for the Natural Clathrate formation, production and their use as a source of fuel
and gas transportation systems.
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Reconstructing Sedimentary Depositional Environment with Borehole Imaging and Core: A Case Study from Eastern Offshore India
Authors C. Shrivastva, S. Ganguly and Z. KhanEstablishing the depositional sedimentary environment is the most important task for exploration geologists to model the
reservoir heterogeneities. Interpretation of borehole images has been the key to better understanding of the sedimentary
environment in the study area in Krishna-Godavari basin (KG basin) along the east coast of India. The present study aims at
reconstructing sedimentary depositional environment with the help of image logs and cores and other available data set. Data
analysis and integration of borehole images in 9 wells of the study area present a detailed insight into the different
architectural elements of the sedimentary environment envisaged.
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Inversion Algorithms for Marine Controlled-Source Electromagnetic Data
Authors A. Abubakar, M. Li, T. M. Habashy and J. LiuThe marine controlled-source electromagnetic (CSEM)
technology has attracted much attention for its capability in
directly detecting thin hydrocarbon reservoirs. The approach
is based on comparing the electric field amplitude as a
function of the source-receiver offset with a similar
measurement for a non-hydrocarbon bearing reservoir.
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Good Practices in Progressing a Smart Well Portfolio
By H.C. LauAlthough smart wells have gained acceptance in the industry1-3, the integrated workflow needed to progress a portfolio of
smart well opportunities requires systematic attention. In some cases, smart wells fail to materialize not because technologies
are not ready but because of lack of participation and integration of relevant disciplines in a timely fashion.
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Extending Life and Usage of CT Strings by High-Performance Spoolable Connector
Authors A. Ehtesham, R. Howard and J. HriscuWorld oil demand challenges the industry to continually find new and more effective methods of hydrocarbon extraction,
while competition and economics further drive the need for greater efficiency. Without question, the development of coiled
tubing (CT) has greatly enhanced the industry’s ability to satisfy both of these dynamics, especially as horizontal drilling has
become more commonplace.
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Paleo-Environmental Reconstruction and Analysis (Paleogeography, Paleoclimate, Paleo-Oceanography, Paleobiology) as Part of Integrated Source Rock Prediction
Authors K.M. Bohacs and C. FraticelliInnovations in paleo-environmental reconstructions can play an important part in the exploration needed to
meet the world’s growing demand for sufficient and reliable energy. We have developed new technology which
integrates the complex interactions among numerous paleoenvironmental controls to predict the occurrence,
quality, and distribution of source rocks at a basin-scale. A key element of the analysis is the determination of the
impact of paleogeography and paleo-earth systems on the production, preservation, and concentration of organicmatter-
rich strata.
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Wellbore Strengthening without Propping Fractures: Analysis for Strengthening a Wellbore by Sealing Fractures Alone
Authors H. Wang, B.F. Towler, M.Y. Soliman and Z. ShanIncorporating particulate lost circulation materials (LCM) into drilling fluids for drilling weak formations to prevent lost
circulation has been in the spotlight in the drilling industry over the last few years. This new technology sometimes is
referred to as “stress cage”. Creating a stress cage1,2 can increase the wellbore pressure containment which effectively widens
the mud weight window. The mechanism has been explained as propping small fractures intersecting the wellbore resulting
in an increase in the hoop stress.
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Fault Shadow and Sub-Reef Imaging Resolved by Interpretative PSDM Workflow in Kutai Basin
Authors N. Abdoun, M-A. Cepi, B. Duquet, F. Bertini and Y. Le StunffA depth imaging case study is presented over a geologically complex area in the South Mahakam delta. Being located
structurally in a transition zone between the Paternoster high platform and the Kutai basin, the area is strongly
compartmentalized. Lateral velocity variations across faults with very significant throws induce severe fault shadow effects
below fault planes over the East Mandu and Jumelai fields. Pinnacle carbonate overlaid by shale produces pull up anomalies
and seismic image degradation over the Stupa field.
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Piceance Drilling: Technology Coupled with Wellbore Manufacturing Processes Critical to Delivering Predictable Results
Authors C.D. Chisholm, S.A. Harris and T.J. MashinskiThe ability to effectively integrate drilling technology and wellbore manufacturing principles is key to the successful
development of the Piceance Basin. The basin is a tight gas unconventional resource located in western Colorado, U.S.A.
The subsurface environment is highly variable where significant lost returns events are encountered, which contribute to
wellbore instability and narrow drilling margins. Vibrational effects on downhole components provide additional
complexity. Coupled with surface locations in rugged terrain and ambient temperatures ranging from -10ºF to 90ºF,
significant obstacles exist to achieving consistent, low cost drilling performance.
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Pore-Scale Modeling of Rate Effects in Waterflooding
Authors N.A. Idowu and M.J. BluntWe first present a new method to generate stochastic random networks representing the pore space of different rocks with given
input pore and throat size distributions and connectivity – these distributions can be obtained from an analysis of pore-space
images. The stochastic networks can be arbitrarily large and hence are not limited by the size of the original image.
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Surface Heave Detection Related with CO2 Injection by DInSAR at In Salah, Algeria
More LessSurface deformation related with CO2 injection at In Salah Gas Plant, Algeria, was analyzed using satellite-borne
Synthetic Aperture Radar (SAR) data. In Salah Gas project is widely known as long term CO2 storage project, of which
injection has been performed since August 2004, with the injected amount of 1 million tons CO2 per year. Surface
deformation around three injection wells was analyzed by Differential Interferometric SAR (DInSAR), a remote sensing
technique to detect the surface displacement at an order of millimeters, using 30 scenes of ENVISAT ASAR. DInSAR
results of 56 interferometry pairs, which met with requirements of perpendicular baseline between two observations less than
300m, the observation interval longer than 1.5 years and less phase noise of tropospheric turbulence, were stacked to derive
the surface deformation rate with reducing the influence of atmospheric delay and phase noise. The result of stacking shows
that the surface heave rate of 7 mm/year was detected around all of the three injection wells, whereas a subsidence rate of 3
mm/year for the gas-producing wells.
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Multi-Stage Fracturing Stimulations Improve Well Performance in Tight Oil Reservoirs of the Changqing Oilfield
More LessThe oil reservoirs in the Changqing Oilfield consist of stacked sand/shale deposits, and the majority of the target zones have a
permeability of 0.05-0.3mD. All oil wells completed in tight reservoirs from the Changqing Oilfield require fracture
stimulation to achieve commercial production and to improve well productivity. Fracture stimulation is also very common for
water injection wells to enhance injectivity.
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Numerical Simulation of CO2 Storage in Aquifers without Trapping Structures
By K. AkakuThe numerical simulations for the CO2 storage using a conceptual, generic, simple 3D aquifer model without trapping
structures were carried out in this study. They showed that the mudstone barriers, which have relatively poor sealing
efficiency, prevent the upward migration of CO2 and help its lateral distribution. This suggests that the heterogeneities in the
formation, particularly the distribution and properties of low permeability rocks, are very important to predict the movement of
the injected CO2.
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Correction of Induction and Laterolog Charts for Evaluation of Gas Reservoirs
Authors A. Shahbazi and K. ShahbaziOne of the main parts of reservoir characterization is the estimation of porosity, lithology and water
saturation. These are done in the pay zones by utilizing formation evaluation and logging tools
consisting of sonic, resistivity, and radioactive logs. For this purpose, induction and laterolog charts in
conjunction with the extent of conductivity of drilling fluid are used to decide whether Dual Induction
Log (DIL) or Dual Laterolog (DLL) tools to be employed.
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Waste Sulfur Disposal: Conceptual Design of a Sulfur Sequestration Process Using Alkaline Minerals
Authors T.A. Rappold and K.S. LacknerExcess production of by-product sulfur from oil and gas requires sequestration beyond acid gas injection
and the piling of elemental sulfur. Here we introduce a process concept for the disposal of sulfur as
magnesium sulfate brine.
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Data, Information and Digital Security
By J. BowlerOil and gas is becoming increasingly more difficult to produce from existing reservoirs and new hydrocarbon reserves are
more often associated with complex reservoirs or inhospitable locations. These conditions have a detrimental effect on the
commerciality of further hydrocarbon developments and decisions need to be taken quickly and robustly to prevent erosion of
the value of the assets. Historically, considerable reliance would have been placed on experienced personnel to take those
decisions, but the industry is facing a skills shortage and the greater incidence of frontiers developments exacerbate that
shortage.
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Integrated Modeling of Karstification of a Central Luconia Field, Sarawak
Authors M. Kosters, P.F. Hague, R.A. Hofmann and B.L. HughesIt is well established that some of the carbonate fields in the Central Luconia Gas Province, Sarawak, Malaysia, have been
subjected to karstification as demonstrated by sometimes severe drilling losses. Although significant progress has been made
mapping and predicting these karstification features on seismic, there is quite some uncertainty left on the exact size and
occurrence of these features. Furthermore there is little known about the impact of karstification on GIIP and water
breakthrough.
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Data Acquisition and Formation Evaluation Strategies in Anisotropic, Tight Gas Reservoirs of the Sultanate of Oman
Authors H.J. de Koningh, S.H. Al-Mahrooqi, B. Herold and K. CigIn a time of declining production and increasing demand, geoscientists are challenged more and more often to develop new
techniques and strategies for evaluation and appraisal of increasingly complex and deeper reservoirs.
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Effect of Mud Clasts on Stochastic Permeability Modeling for Steam Assisted Gravity Drainage (SAGD) Production Forecasting in the Athabasca Oil Sands, Canada
Authors K. Kashihara and K. HosokoshiSub-seismic scale permeability heterogeneity due to the existence of mud clasts can adversely affect steam chamber growth
during the steam assisted gravity drainage (SAGD) process. Using stochastic approach integrating core, log and seismic data
from the Athabasca Oil Sands, Canada to obtain representative permeability values for grid modeling enables reconstruction
of heterogeneity with sub-seismic scale resolution for flow simulation in SAGD production forecasting.
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Oil Sands Reservoir Monitoring Using Time-Lapse 3D Seismic in Canada
Authors T. Nakayama, A. Takahashi, L. Skinner and A. KatoTime-lapse 3D seismic monitoring study was conducted in the Hangingstone steam assisted gravity drainage (SAGD)
operation area, Alberta, Canada. The objective of the study was to delineate areas of the reservoir infiltrated by steam using
differences between two vintages of 3D seismic for efficient reservoir management.
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Propellant-Assisted Perforating - An Alternative Stimulation Solution in Heavily Karstified Carbonate Reservoirs
Authors F. Robinson, K.C. Folse, M.S. Brinsden and D. WongTwo gas fields offshore Sarawak, Malaysia, are characterised by heavily karstified carbonate reservoirs. These reservoirs are
typified by significant porosity and permeability heterogeneities such that large fluid loss zones are commonly encountered
while drilling the reservoir section. The drilling strategy for the subsea development wells called for the use of a solid drill-in
liner as a contingency should major losses be encountered while drilling the reservoir section. This strategy stands opposed to
using a pre-drilled liner. The use of a drill-in liner, however, necessitates perforating.
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Managing Greenhouse Gas Emissions in Upstream Operations in a Carbon-Constrained World
More LessSociety today faces a formidable energy challenge: to meet the ever-increasing demands for more energy, protect against
energy supply disruptions and reduce energy’s environmental and social impacts. Shell has long recognized the trilemna of
providing for cheap, convenient and clean energy and has taken a proactive approach towards managing its greenhouse gas
emissions and carbon footprint.
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