﻿102 
  SANTA 
  MARIA 
  OIL 
  DISTRICT, 
  CALIFORNIA. 
  

  

  folds 
  occur 
  on 
  this 
  flank, 
  one 
  apparently 
  passing 
  through 
  Western 
  

   Union 
  wells 
  Xos. 
  21 
  and 
  22 
  and 
  the 
  other 
  occurring 
  from 
  three-eighths 
  

   to 
  five-eighths 
  of 
  a 
  mile 
  farther 
  northwest. 
  The 
  Newlove 
  anticline 
  as 
  

   shown 
  o 
  the 
  map 
  is 
  wholly 
  hypothetical. 
  Ii 
  is 
  the 
  expression 
  of 
  the 
  

   most 
  plausible 
  explanation 
  of 
  the 
  relationship 
  which 
  is 
  supposed 
  

   to 
  exist 
  between 
  the 
  known 
  Graciosa-Western 
  Union 
  and 
  the 
  eastern 
  

   Western 
  Union 
  well 
  areas. 
  The 
  surface 
  evidence 
  of 
  the 
  structure 
  

   consists 
  of 
  a 
  10° 
  SE. 
  dip 
  in 
  the 
  Fernando 
  beds 
  just 
  north 
  of 
  the 
  

   Graciosa 
  wells, 
  together 
  with 
  some 
  more 
  or 
  less 
  uncertain 
  dips 
  in 
  the 
  

   Monterey 
  toward 
  the 
  head 
  of 
  the 
  ridge, 
  approximately 
  parallel 
  with 
  

   which 
  the 
  anticline 
  is 
  supposed 
  to 
  run. 
  

  

  GEOLOGY 
  OF 
  THE 
  WELLS. 
  

  

  The 
  wells 
  all 
  start 
  in 
  the 
  sands 
  of 
  the 
  Fernando, 
  penetrating 
  this 
  

   formation 
  for 
  70 
  to 
  300 
  feet. 
  No 
  water 
  is 
  reported 
  from 
  this 
  sand, 
  

   but 
  asphaltum 
  is 
  said 
  to 
  have 
  been 
  found 
  at 
  its 
  base 
  in 
  one 
  of 
  the 
  

   wells. 
  From 
  the 
  base 
  of 
  the 
  Fernando 
  to 
  the 
  top 
  of 
  the 
  main 
  pro- 
  

   ductive 
  zone 
  the 
  formation 
  consists 
  of 
  blue 
  and 
  brown 
  shales 
  with 
  

   many 
  hard 
  " 
  shell" 
  layers, 
  some 
  beds 
  of 
  sticky 
  shale, 
  and 
  rarely 
  a 
  

   little 
  sandy 
  material. 
  Streaks 
  of 
  asphaltum 
  are 
  reported 
  as 
  occur- 
  

   ring 
  in 
  the 
  shale 
  in 
  some 
  of 
  the 
  w 
  T 
  ells, 
  and 
  in 
  others 
  gas 
  is 
  present 
  

   under 
  some 
  of 
  the 
  "shells." 
  

  

  The 
  first 
  oil 
  zone 
  (B 
  of 
  the 
  northern 
  part 
  of 
  the 
  field) 
  is 
  reported 
  

   from 
  only 
  one 
  well, 
  where 
  it 
  is 
  nearly 
  200 
  feet 
  thick 
  and 
  is 
  encountered 
  

   at 
  a 
  depth 
  of 
  about 
  2,075 
  feet. 
  Gas 
  is 
  associated 
  with 
  the 
  oil 
  in 
  this 
  

   zone. 
  

  

  The 
  second 
  and 
  important 
  oil 
  zone 
  of 
  this 
  area 
  (C) 
  is 
  struck 
  at 
  

   depths 
  ranging 
  from 
  2,670 
  to 
  something 
  more 
  than 
  3,800 
  feet, 
  and 
  

   lies 
  about 
  600 
  feet 
  lower 
  in 
  the 
  wells 
  than 
  zone 
  B, 
  which 
  is 
  apparently 
  

   unproductive 
  in 
  most 
  of 
  the 
  wells. 
  According 
  to 
  the 
  data 
  in 
  hand, 
  

   the 
  productive 
  zone 
  ranges 
  in 
  thickness 
  from 
  18 
  to 
  about 
  240 
  feet 
  

   and 
  consists 
  of 
  alternating 
  light 
  and 
  dark 
  flinty 
  shales 
  interbedded 
  

   with 
  varying 
  amounts 
  of 
  sandy 
  shale. 
  No 
  true 
  sand, 
  as 
  ordinarily 
  

   implied 
  by 
  the 
  name, 
  occurs 
  in 
  the 
  productive 
  zone 
  of 
  this 
  area, 
  so 
  

   far 
  as 
  the 
  writers 
  were 
  able 
  to 
  learn. 
  

  

  PRODUCT. 
  

  

  The 
  oil 
  from 
  zone 
  C 
  runs 
  from 
  25° 
  to 
  27° 
  Baum6, 
  averaging 
  well 
  

   up 
  between 
  26° 
  and 
  27°, 
  and 
  has 
  a 
  brownish 
  color. 
  It 
  comes 
  from 
  

   the 
  wells 
  at 
  a 
  temperature 
  of 
  about 
  95° 
  F. 
  and 
  is 
  usually 
  accompanied 
  

   by 
  much 
  gas. 
  Certain 
  of 
  the 
  wells, 
  however, 
  are 
  said 
  to 
  show 
  a 
  

   comparativel} 
  r 
  low 
  gas 
  pressure. 
  

  

  The 
  production 
  of 
  the 
  individual 
  wells 
  ranges 
  from 
  300 
  to 
  3,000 
  

   barrels 
  per 
  day, 
  the 
  flow 
  of 
  many 
  being 
  unusually 
  strong. 
  None 
  of 
  

   the 
  wells 
  have 
  been 
  allow 
  r 
  ed 
  to 
  produce 
  up 
  to 
  their 
  full 
  capacity, 
  

  

  

  