Dispensing – With casing or support – Ambulant
Utility Patent
1998-11-25
2001-01-02
Douglas, Steven O. (Department: 3751)
Dispensing
With casing or support
Ambulant
C166S379000, C417S234000
Utility Patent
active
06168054
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an oil recovery system and apparatus and more particulary to a portable oil recovery trailer mounted oil recovery system and apparatus primarily for recovering oil otherwise lost during work over operations in an environmentally safe operation.
In the past copious quantities of oil were spilled that not only contaminated the surrounding surface of the oil well but wasted oil quantities. In this time of environmental awareness oil spills upon the ground are not only damaging to the soil, ground water, rivers and streams due to run off in rain storms, but also waste valuable oil which is thought to be a finite resource retained in the earth below its surface. Furthermore, crude oil often contains chemicals that are equally or more dangerous to the environment that the oil itself. Some suggestions for containing oil spills during work over operations or otherwise include vacuum tanks or suction tanks acting somewhat like a giant vacuum cleaner. Others have proposed various equipment (such as open basins surrounding the casing) useful in recovering oil spills.
SUMMARY OF THE INVENTION
The present invention provides a compact portable recovery trailer which is transferred to the well site and connected to the “Christmas Tree” of an oil well prior to commencement of work over operations. The system and apparatus provided aboard the portable oil recovery trailer permit recovery of oil during the blow down operation into the recovery tank and thereafter during the pulling of the tube string by providing a suction pump for recovery of oil from the oil well into the same recovery tank used for recovery of oil during blow down of the oil preliminary to the work over operation.
The system and apparatus are provided on a self-contained trailer which is placed at the oil well site and includes an oil recover tank, hydraulic motors and pumps, diesel engine, air compresor, high pressure air tanks or cylinders to provide air pressure required for an air driven pump with an air regulator, and associated piping or flow lines wherein the oil recovered during blow down of the well goes directly to the oil recovery tank maintained at atmospheric pressure and thereafter, the oil is pumped by an air driven pump or any other suitable pump into the oil recovery tank during removal of the tubing string. The trailer platform maybe stabilized by hydraulic jacks appropriately located on the trailer. The system and apparatus are designed to deliver the oil recovered to the tank battery or tank truck or whatever receptacle is desirable.
The present apparatus and system provide a self-contained protable trailer including a diesel engine with diesel fuel storage to operate the hydraulic pumps with on board hydraulic oil storage which supply hydraulic fluid to operate hydraulic jacks and hydraulic motors associated with recovery of oil during work over operations for driving the hydraulic motor to operate an air compressor for maintaining the air tanks with sufficient air pressure to drive an air pump. The apparatus and system are designed such as to permit continuous oil recovery while discharging oil into tank batteries or tank trucks as it is being recovered at the well site. The apparatus and system, which is coupled directly to the “Christmas Tree”, provide an environmently safe and simple process for recovery of oil during blown down of the well as well as during removal of the tubing string and is capable of both pumping oil into the oil recovery tank and out to tank batteries or other transport equipment simultaneously.
The system and apparatus are provided on a portable trailer or sled which is placed at the oil well site and includes an oil recover tank, hydraulic motors and pumps, a motive power unit, and associated piping or flow lines wherein the oil recovered during blow down of the well goes directly to the oil recovery tank maintained at atmospheric presure and thereafter, the oil is pumped during removal of the tubing string into the oil recovery tank. The system and apparatus are designed to deliver the oil recovered to the tank battery or tank truck or whatever receptacle is desirable.
The present apparatus and system provide a self-contained portable trailer including a motive power unit to operate the hydraulic pumps with on board hydraulic oil storage which supply hydraulic fluid to operate hydraulic jacks and hydraulic motors associated with recovery of oil during work over operations for driving the hydraulic motor to operate an air compressor for maintaining the air tanks with sufficient air pressure to drive an air pump. The apparatus and system are designed such as to permit continuous oil recovery while discharging oil into tank batteries or tank trucks as it is being recovered at the well site. The apparatus and system, which is coupled directly to the “Christmas Tree”, or other source of oil, provide an enviroment safe and simple process for recovery of oil during blown down of the well as well as during removal of the tubing string and is capable of both pumping oil into the oil recovery tank and out to tank batteries or other transport equipment simultaneously.
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Douglas Steven O.
Peterson Robert C.
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