Page 151 - 4714

a) pit d) contractor g) migratory
b) bulldozer e) wastes h) hole
c) fence f) sensitive i) plastic
Modern reserve pits mainly hold rig _____ (1) temporarily. For
example, cuttings carried up the _____ (2) by the drilling mud fall into
the reserve _____(3). After finishing the well, the drilling _____ (4) or
operator removes any harmful material that may be in the pit and
properly disposes of it. A _____ (5) then covers it with dirt and levels
it. If necessary, the contractor lines а reserve pit with _____ (6) to
prevent soil and groundwater pollution (fig. 61). In especially _____
(7) areas, such as in a _____ (8) bird flyway or in a wildlife refuge,
contractors cover the pit with netting to prevent birds from landing in
it. In addition, they may put up a _____ (9) to keep cattle or wildlife
out.

9 Scan the text and correct spelling and grammar mistakes.

On a drilling locations where the ground are soft, a rathole rig
and crew cannot be needed. Instead, the contractor can usualy move in
the regular rig and his crews right away. Once the driling crew
members got the regular rig ready, they rig up a pile diver and drive
the conductors casing onto the ground, just as Colonel Drake did in
Oil Creek. Though, peoples in the oil patch sometime call conductor
casing “drive pipe.” After driving a casing, the rig crew begans
drilling inside it.
If the ground is too difficult for the conductor pipe to be drive, crew
members can use the regular rig to drill the conductor hole. What's
more, they may also drill the rat hole and mouthhole, using specific
equipment on the regular rig.

150