MAXXWELL PRODUCTION
GEOLOGICAL AND GEOPHYSICAL ANALYSIS
Buying the well or investing money in recovery without thorough and detailed Geological and Geophysical analysis, without calculating the residual reserves and financial profits, without defining the main causes of falling production rate and without determining the most effective method of treatment for increase the flow, it is a purchase "a pig in a poke".
INFORMATION REQUIRED
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Well operation/exploitation history (Production Data)
monthly/daily productive inflow of oil, gas and water
number of productive and non-productive days per month
start and end (maximum and minimum) debit
tubing pressure (internal pressure of productive formation)
extent the fall of productive inflow
stops and possible transitions to the next productive intervals
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All possible test's results
oil
gas
water
pressure
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All possible logging (logs)
induction (electric) log
neutron and gamma-ray
acoustic (casing/cement) log
mud-log, chat-log, etc.
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Well position map (preferably with an altitude)
position and distance relative to the neighboring production wells
position and distance relative to the nearest injection wells
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All possible well documentation
design/construction (depths and casing (OD/ID)
opened productive intervals
techniques of opening the productive formations (casing, cement, productive formation)
using of hydraulic fracturing, chemical treatment, stimulation, etc.
previous closing and transitions to new productive intervals
packers, retainers, cementing, insulation/waterproofing, etc.
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Core analysis, lithology, etc. (Core)
core analysis or
rock photos
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From “Production Data” seen the beginning and the end of exploitation, monthly/daily productive inflow of oil, gas and water (extent of water flooding), the number of productive and non-productive days per month, start and end (maximum and minimum) debit, tubing pressure (internal pressure of productive formation), extent the fall of productive inflow, stops and possible transitions to the next productive intervals. Using the method of mathematical and graphical analysis it is possible to calculate the residual reserve (by oil, gas, and water) and an operating time of the well before and after re-completion, and most importantly, make the initial conclusion about the suitability of this well for recovery.
From “logging data” can be made conclusions about overlying rocks, productive and water layers, water proximity to the wellbore, previously opened/exploited intervals, identify missing productive reservoirs, percentage content of oil, gas, and water saturation, salt content, percentage content of porosity and permeability, gravity and viscosity, borehole depth (TD, TDPB), internal temperature of the productive formation, inner (ID) diameter of casing, make a correlation with neighboring oil, gas or injection wells, determine the best intervals for complete opening (re-opening) the productive formation, and lots of other important information.
RESULTS
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Deposit-field analysis
major characteristics of producing field
development history, geology, lithology, physics, location, position, size, extent, stratification, content, rocks, core, etc.
wells, drilling grid, interwell distances, development and exploitation history, locations, positions, depths, productive formations, particular qualities, etc.
deposit-field overall evaluation
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Well analysis
well position relative to neighboring oil or gas and injection wells
productive layers, absolute elevations
development and exploitation history, well design, methods of opening and stimulation, etc.
core/rock analysis , lithology, productive and unproductive formations
porosity, permeability, pore’s structure
oil saturation, gas saturation, water saturation, formation pressure
water-bearing layers, missing productive layers
correlations with neighboring wells
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Technological parameters
residual reserves of oil, gas and water
financial expenses and profits
recommendations and methods of well re-completion
calculation of technological parameters
technological project and program
technological tack and schedule
operating recommendations after well re-completion
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PHOTOGALLERY
