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Coming in May issue...
first maximum-reservoir-contact well with intelligent well systems
and multiphase flow monitoring. As described by authors from
Saudi Aramco, Baker Oil Tools and Weatherford, remote monitoring
and interactive control systems were implemented on a Saudi well,
which was drilled as a tri-lateral well with 2.6 mi of total
reservoir contact. The intelligent well system used feed-through
production packers to isolate each of three laterals. Three remotely
operating downhole chokes were installed to independently control
flow from each lateral, resulting in very high production rates
with low drawdown for extended time.
for design of low-cost downhole sensing. Although
low-cost downhole sensing has become a reality in the last
year-and-a-half, it is still not the default approach when
working over or planning a well. The Shell iWell team conducted
a field test that considered the well site equipment, generally
required hardware, and a framework for data transmission, storage
and retrieval, as well as ownership of different processes.
As described by a Shell author, this test in Brunei required
development of a DTS database. The benefits of using a local
deployment team were also demonstrated. Shell called the test
real-time data from permanent downhole monitoring systems,such
as fiber optic pressure, temperature and flow sensors, in computational
fluid dynamics (CFD) simulations solves geometrically complex
flow dependencies. In addition, the CFD approach accounts for
the highly coupled chemical physics inherent in multi-phase
systems, particularly gas compressibility effects that impact
wellbore hydraulics and heat transfer which, in turn, govern
the flow, pressure and thermal profiles in the wellbore. In
the near-wellbore region, true reservoir permeability and porosities
are honored and used to populate the CFD model. The model generates
time-dependent flow, pressure and thermal profiles.
clean reservoir samples in deepwater, subsalt wells. Once a deepwater well is drilled, taking
fluid samples for analysis can greatly help decision-makers with
their task. However, gaining a clean sample is always problematic
and time-consuming. Authors from ENI, Baker Atlas and Newpark describe
how they obtained clean samples from four wells in a deepwater,
subsalt GOM field using the smallest possible overbalance, a special
mud system, and a tool that monitored sample cleanup in real time.
The technique reduced rig costs and saved over half of the normal
rig time for the operation.
construction, perforation and completion procedures. A well in the North West Area Development of Schiehallion field was drilled with two laterals to reach different reservoirs, one for oil and the other for gas. A TAML L-4 completion was devised to produce both reservoirs from the one well. Authors from BP, Weatherford and Schlumberger describe the challenges, engineering and testing needed to create the unique construction, perforation and completion procedures.
in conjunction with the Petroleum Society's 58th annual Canadian
International Petroleum Conference, the GO EXPO petroleum exposition
features the latest innovations and most advanced technologies.
This article tells what to look for at this year’s show
in Calgary. The conference technical program will include more
than 150 presentations.
The Rocky Mountain Oilfield Testing Center (RMOTC) provides a real-world environment for testing and demonstration of new oilfield technology. Although Naval Petroleum Reserve No. 3 (NPR-3) is located many miles inland, RMOTC has the capability to simulate a sea-floor environment of up to 3,000 ft of water depth and conduct various tests of technology. It also is using a specially developed downhole video camera so that certain downhole functions (drilling, sidetrack milling, etc.) can be observed and verified.
stratigraphy and geomorphology on the shelf and in deepwater� Implications for exploration. 3D seismic can directly image depositional elements, which can then be analyzed by applying seismic stratigraphic and seismic geomorphologic principles to yield predictions of lithologic distribution, insights to compartmentalization and stratigraphic trapping possibilities. Benefits can be direct, whereby depositional elements at exploration depths can be identified and interpreted, or they can be indirect. Examples of imaged depositional elements from both shallow- and deeply-buried sections are presented.
Source Electromagnetic examples. Petrobras and AGO team up
to give some examples of the results of (inversion) processing
of this promising, yet difficult to process and display EM
market report. What is it that oil companies want? What do
they see themselves needing next? Whatever happened to the �spec� survey market? How alive and well is it? And how has it changed?
These are the sorts of questions that we asked oil companies and contractors alike in this report; we have some interesting answers.
2 of our popular, annual wrap up on artificial lift systems by
our long-standing contributors, Herald Winkler of Texas Tech
University, Jim Lea of Mewbourne School of Petroleum and Geological
Engineering, Oklahoma University and Robert Snyder, Consultant.
This part focuses on the latest developments in electrical
submersible pumps (ESPs).
techniques for real-time analysis and classification of produced
water. Fluid Imaging Technologies describes the advantages
and disadvantages of using optical instrumentation analysis
of particles in produced water. As well as measuring suspended
oil in water concentrations, optical techniques, coupled with
advanced data analysis and pattern matching, can be used to
effectively distinguish and then classify two particles of
identical size and shape from one another. This article illustrates
the efficacy of various imaging techniques for use in the real-time
characterization and quality assurance of produced water.
learned in workover of severely corroded water injectors for
reinjection. In the Central North Sea, an important asset for
Shell UK is reducing its oil-to-sea discharge to meet compliance
with OSPAR regulations. The heavily corroded state of the water
injectors in this field posed a major challenge toward successfully
recovering the slot and executing a workover, which would allow
produced water to be re-injected into the reservoir instead
of being discharged to the sea. Authors from Shell detail the
plans, work and challenges of this workover.
The May 2007 issue closes for advertising
on April 1, 2007.
Ron Higgins, Publisher
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