Jace Field Revisited
T 18 S, R 42 W Section 1
The Jace Field was first surveyed in 1989 just after the discovery well (A)
in the northeast corner of section 1. The geologist had the Morrow channel
moving from north to south on the eastern side of section 1 then turning
east into section 7 and moving east towards the state line and the
Moore-Johnson Field. More than a dozen dry holes tested this mistaken
idea. The geochemistry indicated a different picture. The main body of the
field, with 6 productive wells, was not located until almost two years after
both the discovery well and this survey.
Many researchers have described a "loss of signal" over time as
hydrocarbons are produced. This survey will add to that data base
indicating a real time loss of soil iodine as hydrocarbons are produced. One
of the oil wells is now shut-in and the original iodine anomaly is gone. The
other wells show significantly diminished iodine values, although the map is
surprisingly similar to the original survey completed more than 16 years
earlier. Thanks go to Citation Oil & Gas and Mark Bing for their help in
conducting this research.
in the northeast corner of section 1. The geologist had the Morrow channel
moving from north to south on the eastern side of section 1 then turning
east into section 7 and moving east towards the state line and the
Moore-Johnson Field. More than a dozen dry holes tested this mistaken
idea. The geochemistry indicated a different picture. The main body of the
field, with 6 productive wells, was not located until almost two years after
both the discovery well and this survey.
Many researchers have described a "loss of signal" over time as
hydrocarbons are produced. This survey will add to that data base
indicating a real time loss of soil iodine as hydrocarbons are produced. One
of the oil wells is now shut-in and the original iodine anomaly is gone. The
other wells show significantly diminished iodine values, although the map is
surprisingly similar to the original survey completed more than 16 years
earlier. Thanks go to Citation Oil & Gas and Mark Bing for their help in
conducting this research.
Original Iodine Survey, 1989
Rerun Iodine Survey, 2005
Even with the differences in survey design, collection and navigation
methods (i.e 1989 is pre GPS) the maps are still very similar. Four of the
five producers have diminished signals compared to the original survey. Two
of these wells, which have lost almost all their original iodine anomalies are
either plugged or shut-in. The two dry holes in the north side of the original
anomaly are still in an anomaly but the signal is dropping around them as
well. The dry hole in the south is still showing a strong anomaly possibly
indicating a tight formation that can not be drained.
The only productive well in the section not originally associated with an
anomaly now shows one. There are a number of possibilities to explain this
but they are all pure speculation. One possibility is that the channel is very
permeable and well connected to the oil indicated to the east and west of this
well. Supporting this is the enhanced production after the well to the west
was shut-in. More likely, however, is that the original sample did not
correctly reflect the anomaly that existed in the area.
methods (i.e 1989 is pre GPS) the maps are still very similar. Four of the
five producers have diminished signals compared to the original survey. Two
of these wells, which have lost almost all their original iodine anomalies are
either plugged or shut-in. The two dry holes in the north side of the original
anomaly are still in an anomaly but the signal is dropping around them as
well. The dry hole in the south is still showing a strong anomaly possibly
indicating a tight formation that can not be drained.
The only productive well in the section not originally associated with an
anomaly now shows one. There are a number of possibilities to explain this
but they are all pure speculation. One possibility is that the channel is very
permeable and well connected to the oil indicated to the east and west of this
well. Supporting this is the enhanced production after the well to the west
was shut-in. More likely, however, is that the original sample did not
correctly reflect the anomaly that existed in the area.
Kiowa County, Colorado
7
GrayStone Exploration Labs, Inc.
