Novel anti-wax-depositing oil pumping device

Abstract

The invention provides a novel anti-wax-depositing oil pumping device. The novel anti-wax-depositing oil pumping device comprises an oil tube, an anti-off device, an oil extracting rod, a controlling rod, a piston, a small-sized explosion-proof water supplying boiler and a water temperature automatic regulator. According to the structure of the novel anti-wax-depositing oil pumping device, the unique hollow heating oil extracting rod and the interlayer heating oil tube are arranged, the difficult problems that wax removing of crude oil is difficult, paraffin wax appears repeatedly, and environmental pollution is generated are solved, and meanwhile, the problems of high cost of heavy oil due to long-term depending on a chemical viscosity-reducing agent and steam injection and enormous expenses generated in later emulsification dehydration and settlement treatment are also solved.

Description

technical field [0001] The invention belongs to the field of petroleum oil production equipment, and in particular relates to a novel anti-wax pumping device. Background technique [0002] For crude oil with a certain amount of paraffin dissolved, during the mining process, the formation temperature is normally below 1200 meters from the surface, and the crude oil will basically not solidify. Generally, the waxing of crude oil is stuck at 150 to 900 meters from the surface, and the dissolved paraffin Then it precipitates in the form of crystals, grows up and aggregates, and deposits on the solid surface such as the pipe wall, which is the so-called waxing phenomenon. At present, the wax removal methods mainly include chemical wax removal and mechanical wax removal. These two methods are faced with the problems of high cost of crude oil wax removal, ordinary wax removal affects production time, and causes varying degrees of damage to downhole tubing strings and reservoirs. A...

AI Technical Summary

Problems solved by technology

At present, the wax removal methods mainly include chemical wax removal and mechanical wax removal. These two methods are faced with the problems of high cost of crude oil wax removal, ordinary wax removal affects production time, and causes varying degrees of damage to downhole tubing strings and reservoirs. At the same time, heavy oil thermal recovery wells face a series of problems such as high steam injection boilers, pipe network laying, and high maintenance costs, and bring unnecessary material loss, safety and environmental protection and other accident hazards.

[0003] The present invention provides a new type of oil production structure with a wax removal device. The structure is equipped with a unique hollow heatable oil production rod and an interlayer heatable oil pipe, which can solve the difficult problems of crude oil wax removal, repeated occurrence of paraffin and environmental pollution. At the same time, it solves the high cost of long-term dependence on chemical viscosity reducer and steam injection for heavy oil, as well as the huge cost of emulsification, dehydration and sedimentation treatment in the later stage.

Images