Improved Sweep in Deep Tor

Advanced Water Flooding 2 (AWF 2)
Technology Readiness Level 0

The objective is to identify and mature solutions for increasing the oil recovery from the deep Tor formation at Halfdan by providing access and sweep through existing well networks. 4D seismic and logging data from the dedicated observation well shows uneven vertical sweep of the Tor formation, with good recovery from the upper section but little to no recovery from the deeper region.

DHRTC Hypothesis

A commercially viable solution for increasing recovery from the deep Tor formation can be developed by providing access to this part of the reservoir from existing wells and enhance water flooding sweep. To enable this, a solution for exiting completed wells and accessing the lower section of the reservoir will be found and matured e.g. building on existing Radial Jet Drilling technology or competing solutions.

Furthermore, modelling of induced fractures and jetted well bores will be done to better characterize the sweeping effect in the deep Tor formation which has a lower permeability. The scope of this model will also address mechanisms for directing the injection flow towards the lower permeable sections by-passing the already swept sections.

The Improved Sweep in Deep Tor group is subdivided into 2 work packages:

Expected Key Deliverables at TRL 3

  • Computer simulation and model of induced fractures
  • Lab test of the Radial Jet Drilling technology or competing solutions
  • Large scale testing of the Radial Jet Drilling technology or competing solutions
  • Feasibility study on construction of composite coiled tubing (Completed)
  • Sector model computer simulations of results to determine the most promising commercially viable combination of the approaches.

Collaboration

Partner institutions:

Other partners:    

Technology Readiness Level

The Technology Readiness Level (TRL) scale is used to measure the maturity of a project. All technologies are evaluated on the same basis of Comparison, which provides a better overall picture. The first step on the scale is research still in the idea phase while step 7 is where the idea has matured into applicable technology.

Read more about how we use the TRL scale at DHRTC here

Work Packages

Idea

Do you have an idea or a proposal for a research project that can enhance the oil and gas recovery from the Northsea? Send us your proposal here.