Geosteering

The correct position of the wellbore in the reservoir is a key component of the drilling process, which affects not only the productivity and life cycle of the well, but also the economic efficiency of the field development in general. 
Our team helps to solve the following tasks:
  • Achieve maximum penetration through the reservoir
  • Keep a certain distance away from fluid contacts
  • Place the wellbore in the most productive part of the formation
  • Reduce drilling risks
geonavigaciya

Our service help you to 
Increase the startup flow rate
by achieving the maximum effective length of the horizontal well
Increase the cumulative production
by placing wells in the most productive areas
Increase the oil recovery factor
by maximizing reservoir drainage area
Extend the well' lifespan
by placing it at a certain distance from the fluid contacts
Reduce the EOR cost 
due to the exclusion of the sidetracks and pilot holes
 
 

 

Geosteering services include: 

Preparatory part: 

  • Determine the optimal placement of the wellbore in the formation. 
  • Create a two-dimensional reservoir model, generate synthetic logs along the planned well trajectory. 
  • Model the formation structure behavior scenarios. 
  • Assess the lateral and vertical formation heterogeneity. 
  • Assess the directional survey uncertainty while drilling. 
  • Discus drilling details with the customer: planned trajectory of the well, geological objectives, risk analysis. 
  • Select the optimal LWD complex. 
  • Coordination of the communication scheme between the customer, geosteering engineers, well drilling contractor. 

 

Day-night geosteering (optimization of the well trajectory) in real time (remote or at the customer’s office): 

  • Analysis and interpretation of LWD. 
  • Interpretation of azimuthal logging (image of the wellbore) of the well. 
  • Landing of the wellbore on the top of the reservoir. 
  • Updating the two-dimensional formation model according to the incoming geological information. 
  • Issuance of recommendations for adjusting the well trajectory to hold the wellbore in the target reservoir interval. 
  • Placing a horizontal wellbore according to geological tasks. 

 

Preparation of the final geosteering report: 

  • Preparation of a report on the wellbore geostering. 
  • Calculation of the efficiency of well drilling. 
  • Analysis of the quality of decisions. 
  • Recommendations for geosteering of subsequent wells. 
  • Updating the sector geological model based on new data. 

Used software

© Geonaft, 2020