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Geothermal steam drive oil extraction method and device

A technology of geothermal steam and oil production equipment, which is applied in the direction of production fluid, earth drilling, wellbore/well components, etc., can solve the problems of large mechanical equipment, high failure rate, and high cost, and achieve simple structure, low failure rate, and exhaustion. A large amount of effect

Inactive Publication Date: 2007-11-28
龚智勇
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This is not compatible with the current electromechanical technology that has been relatively developed, and new high-tech technologies are widely used today. Its shortcomings have gradually emerged, such as the existing mechanical equipment is very large, high cost, high failure rate, and large energy consumption. Wait

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  • Geothermal steam drive oil extraction method and device

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Effect test

Embodiment 1

[0015] The geothermal steam-driven oil production method of the present invention is to heat the steam heat pipe with the formation heat energy at the lower part of the oil production well, vaporize the water in the steam heat pipe into steam, and the steam pushes the piston in the driving cylinder, and the piston rod drives the oil pumping piston plate in the cylinder body of the oil pump. The reciprocating operation in the middle makes the crude oil sucked into the wellbore discharge from the one-way valve at the outlet of the pump body and enter the oil pipe until it is produced on the ground. Wherein, the liquid in the steam heat pipe is a volatile and non-corrosive liquid, such as ether and the like.

Embodiment 2

[0017] The geothermal steam-driven oil recovery method is realized by using the following devices: the lower end of the tubing 2 at the lower part of the wellbore 1 is connected to the pump body 3, and a packer 4 is arranged at the lower port of the pump body 3 to separate the bottom of the wellbore 1 into a steam generating section 5. The pump cylinder 6 is fixed on the upper coaxial line in the pump body 3, and the three-stage drive cylinder 7 is connected to the lower end of the pump cylinder 6. The piston rod 8 axially penetrates the driving cylinder 7 and the oil pumping cylinder 6, and the piston rod 8 is respectively provided with a driving piston plate 9 and an oil pumping piston plate 10. The piston rod 8 in the oil pumping cylinder 6 is cylindrical and has an The oil hole 11 and the upper end of the barrel are provided with a one-way outlet valve 12, the upper port of the oil pumping cylinder 6 is provided with an outlet one-way valve 13, and the bottom of the oil pum...

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Abstract

The invention relates to an oil production method with geothermal steam-driving and the device. A pump body is connected with the lower end of oil pipe. Packer is set at the lower port of pump body to separate the bottom of well bore into the steam generating segment. Steam thermal pipe absorbing geothermal heat is set in the steam generating segment. The ground heat energy at the lower end of oil production well is used to heat the steam thermal pipe. The water in the steam thermal pipe is steamed into steam and the steam drives the piston in the driving cylinder. The piston bar drives the oil-pumping piston piece run to and fro in the cylinder so that crude oil absorbed in well bore is discharged from the unidirectional valve at the outlet of pump body and enters into the oil pipe. Finally crude oil is exploited out on the ground. The invention is provided with reasonable design, simple structure, reliable mechanical performance, low failure rate, energy saving, safety, high efficiency, stable production and low cost so on.

Description

technical field [0001] The invention belongs to an oil recovery method and device, in particular to a method and a device for driving oil recovery by using geothermal steam. Background technique [0002] The traditional oil well production pumping unit is composed of a motor driving a lever through a rocker arm connecting rod to reciprocate and pull the sucker rod, commonly known as a kowtow machine. The equipment is widely used in the field of oil recovery, and its technology is mature. Its structural principle has basically remained unchanged for a long time. This is not compatible with the current electromechanical technology that has been relatively developed, and new high-tech technologies are widely used today. Its shortcomings have gradually emerged, such as the existing mechanical equipment is very large, high cost, high failure rate, and large energy consumption. Wait. Contents of the invention [0003] The invention aims at overcoming the deficiencies of the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24
Inventor 龚智勇
Owner 龚智勇