Specifications

HYDROSTATIC TUBING BAILER
For General Bailing Service
2853 Cherry Avenue
Signal Hill, CA 90755
Ph: [phone]
Fax: [phone]
For more than half a century CAVINS has been the leader in the manufacturing of pro-
duction bailing equipment for sand. One of the pioneers of proven bailing tools is the CAVINS
Telescoping Hydrostatic Valve Section Bailer for use on wire line. The CAVINS Hydrostatic
Tubing Bailer works on the same principle as the wire line type bailer only it is run on the
tubing string thereby greatly increasing the volume of sand which can be removed with each
run.
The Hydrostatic Tubing Bailer operates on a pressure differential basis utilizing the fluid
column (1000 ft. min.) standing in the well to create the hydraulic energy required for its func-
tion. As the tubing string is lowered and contacts the fill the valve section is opened drawing
sand into the string which is trapped by a check valve. This type of operation can continue
until the differential pressure has been equalized. The tubing is then pulled from the well and
cleaned out. If desired the By-Pass Valve Section can be run which allows the string to be
pulled dry above the load of sand.
The Tubing Bailer is one of the most efficient means of sand recovery where high volume
of fill exists in the well. This method is far superior to simple circulating techniques not only
because of the obvious savings of costly time and equipment but also because the sand is
drawn with hydraulic suction rather than high pressure with a circulating pump which actu-
ally can force the sand back into the perforations of the well liner. The hydraulic surge from
the Tubing Bailer will effectively flush the perforations during sand recovery operations.
23
OIL WELL TOOLS
Fig. 2
Fig. 1
Tubing Bailer
Valve Section
TUBING TUBING
BOTTOM
SECTION
WITH
CHECK VALVE
AND SHOE
BY-PASS
VALVE
KNOCK OUT
COLLAR
TUBING
TUBING BAILER
VALVE SECTION
OPTIONAL
SAW TOOTH
SHOE
By-Pass
Valve
Section
Bottom Valve Section
With Check Valve and
Bridge Buster Shoe
Optional
Drag Shoe