The Hollow Sucker Rod Thermal Carrier Injection Oil Recovery Device
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The Hollow Sucker Rod Thermal Carrier Injection Oil Recovery Device utilizes a positive circulation system formed within the wellbore tubing. By continuously or intermittently injecting thermal carriers (such as hot water, hot oil, or steam) or chemical agents through the inner cavity of the hollow sucker rod, the device raises the wellbore temperature, reduces crude oil viscosity, and eliminates wellbore wax deposits, enabling the well to produce normally. (Note: When injecting hot oil, the hot oil should be filtered, degummed, and dewaxed light oil.)
The thermal carrier inside the hollow sucker rod is delivered through a ground-based water mixing process. It enters the annulus between the tubing and the hollow sucker rod via the water mixing riser, hose, hanger, polished hollow rod, hollow sucker rod, and one-way water mixing valve. Within the tubing, the thermal carrier mixes with the crude oil and returns to the surface production and transportation system.