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Structure-metrical analysis for oil and gas exploration Dear Sirs,
We are honored to offer to
Your kind attention the methods of evaluation of prospective fields by means of
structure-metrical analysis for hydrocarbon deposits has been developed for many
years by different scientific research institutes and centers. They are based on
the analysis of space and aerial photographs performed in various light
spectrums. The
methods can be successfully applied without any geological or other information,
their application spreads not only on explored oil and gas-bearing sites where
always are discovered «missed» or not enough explored oil and gas-bearing
structures, but also on completely unexplored Earth and shelf
areas.
We
shall mark that we have already held experiments on discovering and estimation
of hydrocarbon concentration in different regions in Commonwealth of Independent
States and other countries. Using
actually only data of remote-controlled sounding even of unknown (preliminary
unexplored) territory in which customer is interested it is possible to give
very effective prognosis of the potential presence of row materials resources
including estimation of conditions complexly in drilling on vertical profile and
recommended location of drilling wells. All
these estimations and prognosis can be received without field exploration and
prospecting wells drilling, instrumental geochemical analysis, seismic or other
geophysics sounding. This shortens time limit for exploration of mining industry
objects, excludes cases of environmental damage, radically
lowers expenditures connected with prospecting works. Stages of
structure-metrical research and types of final production Structure-metrical
analysis supposes several stages of prediction works. Realization of each of
them promotes increasing of precision and detalization of the total prediction
analysis and cartographying. In the standard scheme of structure-metrical
analysis following stages and types of works are present. 1
Stage. Prognosis-estimational small-scale zoning of the territory. On
this stage worked out: 1a.
Cartoscheme of total prognosis estimation of oil and gas-bearing
perspectives of the studied territory in the scale 1:1000000 (first computer
iteration of prognosis estimation of hydrocarbons) with marking of the limits
and preliminary characteristic of the total value of prognosis resources of oil,
gas and gas-condensate in marked areas (fields). 1b.
Cartoscheme of prognosis of prospective hydrocarbon raw materials deposits
areas in
the scale 1:500000 (second computer iteration of prognosis hydrocarbons
estimation) with characteristics for every prognosis deposit of the: -area
of hydrocarbons location; -medium
capacity of productive stratums; -volume
of productive stratums; -medium
content of hydrocarbons in productive stratum; -volume
of prognosis resources of oil, gas and gas-condensate. 2
Stage. Middle-scale prognosis estimation of location and quantitative
characteristics of hydrocarbons occurrences. On
this stage cartoschemes of refined prognosis estimation of
prospective for hydrocarbon raw materials structures are created in the scale
1:100000 (third computer iteration of prognosis hydrocarbon estimation). The
number of cartoschemes created for each structure depends on the number of
productive stratums. For
each deposit (productive stratum) are marked: -limits
of deposit; -depth
of location (relative and absolute) of the roof of productive stratums; -areas
of deposit for each diapason of productive stratum capacity; -volume
of the deposit area for each diapason of productive stratum capacity; -medium
content of hydrocarbons for each diapason of productive stratum capacity; -volumes
of resources of oil, gas and gas-condensate for each diapason of productive
stratum capacity and for deposit on the whole. 3
Stage. Large-scale (detailed) prognosis estimation of location and quantitative
characteristics of hydrocarbons deposits. 3.1.
On this stage large-scale plans (scale 1:10000) of prognosis estimation of
structures, prospective for hydrocarbon raw materials (forth computer
iteration of prognosis hydrocarbons estimation) are composed. In these
cartoschemes is given detailed prognosis characteristics of: -limits
of industrial deposits for each productive stratum; -
depth of location (relative and absolute) of the roof of productive stratums; -
area of deposit for each diapason of productive stratum capacity; -volume
of the deposit area for each diapason of productive stratum capacity; -medium
content of hydrocarbons for each diapason of productive stratum capacity; -
volumes of resources of oil, gas and gas-condensate for each diapason of
productive stratum capacity and for deposit on the whole; -qualitative
characteristics of hydrocarbon raw materials (density, content of sulfur,
paraffins etc.) for each stratum and block of explored structures; list of these
characteristics is refined together with the customer. 3.2.
The works are finished with composition of the
plan of recommended location of drilling wells. Methods of
structurometric analysis on the prospecting works stage reveal possibility to
make more well-grounded choice for the places of control-prospecting and
industrial drilling wells foundation taking into account minimization of the
damage to environment, optimal indications of geological structure and
geophysical fields (with regard for breaks and geopatogenic structures, presence
of local seismically, geochemical abnormalities, etc.) and
ecological-geophysical parameters of the field. Given
methods turned out to be very effective in case of the presence of several
litological sections different in depth of occurrence on explored territory,
e.g. for the purpose of analysis and prognosis of multi-stratums oil and gas
deposits. In this case research finishes by working out of prognosis
cartographic models for each stratum and compound maps and geological sections.
When necessary it is possible to compose detailed geological cores with
estimation of the change of rock content and drilling on vertical profile
complexly and can be given comparative estimation characteristics of recommended
for prospecting drilling wells place. One
more advantage of given methods is possibility to use structurometric analysis
procedure for study of hydrocarbon deposits on shelf. It was approved in
prognosis research and cartography of hydrocarbon deposits in Caspian Sea,
Baltic Sea, Japanese Sea, Yellow Sea, in Mexican bay and on the western shore of
Canada. Usage
of structuremetric analysis achieves (on the basis of experience from works held
for the US territory in Oklahoma and Texas) effectiveness of prospecting
drilling which is higher than 75%. Consequently the precision of this method
exceeds precision of the methods of traditional technological scheme by 3 or
more times. When
using traditional methods of prospecting works cases of deviation of real depth
of hydrocarbon location from prognoses in 3 or more times are often. Detailed
checking of the method of structurometric analysis of carbons roof’s depth of
location on the proving ground of MSU in Satino (Russia) for which was used net
of several thousands of key wells, showed that error of definitions is
approximately 3-5% of the depth of analysis surface occurrence. Approximately
the same precision (but with less number of prospecting wells) was discovered
for hydrocarbon deposits in Oklahoma. Thus
we can state that when depth of hydrocarbons occurrences is 1-3 km
average error of their definition by structurometric analysis method will be
accordingly 30-50 and 90-150m. These
values on the whole correspond to the results of seismic 3D sounding.
Nevertheless structurometric analysis has advantage also in this parameter: it
can be used in exploration of any territory, even with very complicated
geological structure, when study of them with the help of seismic sounding very
often doesn’t bring positive results. Dear Sirs, By
today among the numerous clients of the Company there are several oil companies
effecting a supplementary exploration of their fields, businessmen estimating
business outlooks of certain regions. It
is quite natural that our company is open to new partners who are interested to
utilize the described methods. And we are ready to contract for any or all above
stages. For
Your convenience we enclose some demonstrational materials on the results of the
researches performed. For
more information and details do not hesitate to contact Mr. Ruslan Tkhazeplov
using the following facilities: Telephone:
(007-095) 120 6127 Fax:
(007-095) 937 5060 E-mail:
ruslan105@hotmail.com or cherkes@mail.com Looking
forward to fruitful cooperation. Sincerely
Yours, Ruslan
S. Tkhazeplov November
25, 2001
Moscow, Russia |
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