Renewable
White Hydrogen
Production

For renewable natural-occurring white hydrogen to become the cleanest, lowest-carbon emitting and most cost-effective driver in the energy transition, engineers, geoscientists and oil and gas experts must firs understand geological hydrogen’s subsurface behavior fully and from there drive local, safe and sustainable production.

Solutions are needed for all parts of the process; from exploration, development, production storage and transport, right through to the utilization of hydrogen. Hethos is focusing its expertise on developing all key elements of hydrogen production, from reservoir study to well design; materials used; and surface safety.

Hethos has already defined a full range of hydrogen production technologies and is working on technical and scientific solutions to the challenges raised by naturally occurring hydrogen production.

Production
Technologies

Hethos has access to a full range of production technologies and the expertise to solve through innovation the challenges of Hydrogen and Helium extraction

Reservoir simulation

  • Current simulation systems are being adapted for hydrogen reservoirs
  • Collaboration with Ohio State University to develop a H2 based simulator using their existing CO2 model
  • Easy to adapt to another reservoir, and insert large macro-specifics such as faults etc

Hydrogen adapted seismic

  • Targeting hydrogen chimneys and local accumulations, especially at the intersection of large faults and unconformities
  • Will use P versus S waves to identify H2 chimneys with 3S Seismic
  • Discussions with other teams such as Geolink or Wavelab

Polymer casing and tubing*

  • Metal alloys casing and tubing will not resist hydrogen embrittlement, and current plastic casing does not resist lower than 500m to 700m
  • Hethos will use a polymer* that can resist downhole temperatures and pressures down to 2000m at least
  • Casing and tubing are saline water and hydrogen resistant

Well architecture

  • For transit reservoir with local accumulations, Hethos targets the hydrogen flux with multi-level laterals placed on both sides of the perpendicular of main local fracture direction
  • Laterals can be done by radial drilling, or more classical techniques such as whipstock that is less expensive than horizontals as lower precision needed

Sensors

  • All weather, wide detection range hydrogen sensors are mandatory for surface crew safety. Existing sensors have poor resistance to outside conditions and limited sensitivity range
  • Developing sensors for ‘fairy circle’ analysis
  • Hethos will use customized sensors based on semi conductors, answering the above issues