﻿PETROLEUM 
  AND 
  NATURAL 
  GAS 
  IN 
  WESTERN 
  NEW 
  YORK 
  31 
  

  

  4 
  Where 
  the 
  rock 
  dips 
  uniformly 
  in 
  one 
  direction, 
  as 
  it 
  does 
  

   in 
  western 
  New 
  York, 
  the 
  gas 
  has 
  a 
  tendency 
  to 
  escape 
  at 
  the 
  

   northern 
  outcrop. 
  Consequently 
  small 
  quantities 
  of 
  surface 
  

   gas 
  may 
  occur 
  at 
  the 
  reservoir 
  outcrops, 
  and 
  borings 
  near 
  these 
  

   outcrops 
  will 
  find 
  very 
  little 
  gas 
  or 
  gas 
  at 
  low 
  pressure. 
  

  

  5 
  In 
  general, 
  deep 
  wells 
  show 
  greater 
  pressure 
  than 
  shallow 
  

   ones; 
  and 
  this 
  is, 
  in 
  many 
  cases 
  at 
  least, 
  independent 
  of 
  hydro- 
  

   static 
  causes. 
  

  

  6 
  The 
  gas-horizons 
  in 
  the 
  district 
  under 
  consideration 
  are 
  the 
  

   Trenton 
  limestone, 
  the 
  Medina 
  sandstones, 
  the 
  Clinton, 
  the 
  Nia- 
  

   gara 
  limestone, 
  the 
  waterlime 
  beneath 
  the 
  Corniferous 
  lime- 
  

   stone, 
  and 
  the 
  Marcellus 
  at 
  about 
  the 
  horizon 
  of 
  the 
  Stafford 
  

   limestone. 
  Shallow 
  wells 
  have 
  found 
  an 
  inconsiderable 
  amount 
  

   of 
  gas 
  among, 
  or 
  just 
  below, 
  the 
  Portage 
  sandstones. 
  

  

  7 
  South 
  of 
  the 
  Corniferous 
  outcrop, 
  borings 
  extending 
  into 
  and 
  

   through 
  the 
  Trenton 
  have 
  not 
  found 
  paying 
  gas 
  in 
  the 
  latter 
  

   formation. 
  North 
  of 
  the 
  Corniferous 
  outcrop 
  the 
  yield 
  in 
  the 
  

   Trenton 
  has 
  been 
  better, 
  but 
  can 
  not 
  be 
  considered 
  as 
  paying. 
  

   These 
  borings 
  have 
  been 
  so 
  expensive 
  and 
  unsatisfactory 
  that 
  

   further 
  attempts 
  to 
  reach 
  Trenton 
  gas 
  are 
  not 
  recommended. 
  

  

  8 
  The 
  Medina 
  sandstone 
  is 
  the 
  best 
  producing 
  rock, 
  and 
  nearly 
  

   all 
  the 
  gas 
  is 
  found 
  within 
  200 
  feet 
  of 
  the 
  top 
  of 
  that 
  formation. 
  

   In 
  Erie 
  co. 
  the 
  Quartzose 
  sandstone 
  of 
  Hall, 
  or 
  " 
  White 
  Medina 
  " 
  

   as 
  it 
  is 
  generally 
  called, 
  is 
  the 
  main 
  reservoir. 
  It 
  is 
  less 
  than 
  

   150 
  feet 
  below 
  the 
  top 
  of 
  the 
  Medina 
  and 
  thins 
  rapidly 
  eastward 
  

   from 
  Erie 
  co. 
  

  

  9 
  The 
  presence 
  of 
  gas 
  in 
  the 
  Quartzose 
  sandstone 
  appears 
  to 
  

   depend 
  upon 
  the 
  softness 
  of 
  the 
  rock. 
  If 
  anticlines 
  in 
  the 
  stratum 
  

   occur, 
  they 
  are 
  too 
  low 
  to 
  be 
  perceived. 
  

  

  10 
  The 
  Clinton 
  has 
  furnished 
  paying 
  gas 
  in 
  a 
  few 
  instances. 
  

  

  11 
  A 
  small 
  quantity 
  of 
  gas 
  containing 
  sulfureted 
  hydrogen 
  

   is 
  often 
  found 
  in 
  the 
  upper 
  part 
  of 
  the 
  Niagara 
  limestone. 
  This 
  

   does 
  not 
  pay 
  except 
  where 
  used 
  with 
  gas 
  from 
  a 
  lower 
  level. 
  

  

  12 
  The 
  honeycombed 
  waterlime 
  beneath 
  the 
  Corniferous 
  often 
  

   contains 
  pockets 
  of 
  gas, 
  and 
  in 
  the 
  case 
  of 
  the 
  Kelly 
  well 
  

   at 
  Zoar 
  has 
  given 
  the 
  best 
  well 
  in 
  Erie 
  co. 
  It 
  is 
  a 
  promising 
  

   "horizon 
  where 
  wells 
  are 
  started 
  on 
  the 
  Portage 
  outcrop. 
  

  

  