Investigation Operations

Investigation Operations

Professionals in Rimera Group's Well Logging Division command a system of successful techniques for examining wells and managing drilling emergencies.

Mud Logging
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Mud Logging
In the course of the operations, we perform MWD, log drilling fluid characteristics, such as content of hydrocarbons and other fluids flowing from tapped reservoirs; collect and perform quick analysis of sludge and core.
Open Hole Investigations
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Open Hole Investigations
The investigations are aimed at:
  • lithological layering of cross-cut using electric logging techniques;
  • identify reservoirs;
  • assess reservoir saturation characteristics. Rocks that comprise geological section have different specific resistance, depending on their lithological composition and reservoir saturation characteristics.
  • assess reservoir porosity and permeability.
Cased Well Investigations in the Course of Construction
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Cased Well Investigations in the Course of Construction
Our set of well-logging operations insures that geological investigation objectives are achieved by lowering radioactive and acoustic logging tools three times.
  • cross-cut lithological layering and subsequent correlation;
  • reservoir quality discrimination;
  • assess reservoir porosity, clayiness, and permeability;
  • assess reservoir saturation characteristics;
  • identify oil-water, gas-oil, and gas-water contacts and subsequently tie perforation intervals to these;
  • check casing condition using acoustic cement bond logging, flaw detection, temperature logging, gamma flaw detection, gamma thickness measurements, electromagnetic collar logging, electromagnetic flaw detection, acoustic video cable logging, and mechanical pipe profile logging.
Perforation
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Perforation
Perforation operations having various applications and performed inside deep wells using powders, high explosives and other explosives. Blasting helps eliminate accidents, restore circulation, back off, shake, break or cut drillstrings, break for subsequent removal, or in some cases, remove metal objects left inside the well due to emergency, prevent sticking, etc.
Perforation (Cable and Pipes)
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Perforation (Cable and Pipes)
Jet perforation ensures a hydraulic connection between the well and reservoir, i.e. the perforation must pierce the casing, cement column, and enter the reservoir clogging area with drilling agents and cementing slurries to penetrate the non-contaminated part of the reservoir.
Well Blasting Operations
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Well Blasting Operations
The following operations are conducted in order to eliminate drilling accidents:
  • detect drilling tool sticking intervals;
  • eliminate sticking using perforation techniques;
  • break or cut drilling pipes, tubing and casing;
  • detect metallic objects left inside the well;
  • remove foreign objects from the well and clean the bottom hole;
  • install separation and isolation bridge plugs inside the wellbore using cable devices;
Pressure Transient Testing
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Pressure Transient Testing
Geophysical investigations of productive reservoirs in the course of reservoir testing, completion and recovery, and pumping of displacement agent to obtain productivity, fluid-loss property and reservoir connectivity data, including gaging of pressure, temperature, flow rate, and composition and properties of fluid inside the wellbore using equipment lowered into the well suspended on logging cable.
Reservoir Management and Production Well Checks
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Reservoir Management and Production Well Checks
  • investigation of oil and gas displacement inside the reservoir to check reserve recovery and assess performance of EOR techniques;
  • determining of reservoir producing characteristics;
  • investigation of wells to determine the best process equipment operation mode;
  • verification of actual well geometry;
  • checks of casing and cement column condition, detections of casing or cement leaks, and spacing crossflow for repair planning;
  • determining of well water inflow intervals;
  • checks of tubing and elevator equipment condition;
  • information support to repair operations, special examinations during various process operations;
  • process operations: installation of separation bridges and and plugs, and stimulated completion;
  • checking and documenting of repair results for well file.

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