text: **ROAE**
  Return on average equity. 
  
  **ROACE**
  Return on average capital employed. 
  
  **seismic**
  Data used to gain an understanding of rock 
  formations beneath the earth’s surface using 
  reflected sound waves. 
  
  **tcf**
  Trillion cubic feet. 
  
  **TJ**
  Terajoules. Joules are the metric measurement 
  unit for energy. A terajoule is equal to 1 joule 
  x 1012. 
  
  **PJ**
  Petajoules. Joules are the metric measurement 
  unit for energy. A petajoule is equal to 1 joule 
  x 1015. The equivalent imperial measure to 
  joules is British Thermal Units (BTU). One 
  kilojoule = 0.9478 BTU. 
  
  **delineation well**
  Comprises two categories: near-field 
  exploration wells and appraisal wells. Near- 
  field exploration wells are wells located near 
  existing fields/discoveries and have a higher 
  expectation of success than wildcat exploration 
  wells. These wells test independent structures 
  or traps and have a higher risk of failure than 
  appraisal or development wells. An appraisal 
  well is a well drilled for the purpose of 
  identifying extensions to known fields or 
  discoveries. 
  
  **Proven reserves (1P)**
  Proven reserves (1P) are those reserves that, to 
  a high degree of certainty (90% confidence), 
  are recoverable. There is relatively little risk 
  associated with these reserves. Proven 
  developed reserves are reserves that can be 
  recovered from existing wells with existing 
  infrastructure and operating methods. Proven 
  undeveloped reserves require development. 