Layered steam distribution system for steam flooding and steam distribution method thereof

A technology of steam drive and steam distribution, which is applied in general control systems, control/regulation systems, earthwork drilling and production, etc., and can solve the problems that simultaneous steam drive cannot be realized

Inactive Publication Date: 2006-12-27
石在虹
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method cannot achieve the purpose of simultaneous steam flooding of multiple layers in the same wellbore

Method used

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  • Layered steam distribution system for steam flooding and steam distribution method thereof
  • Layered steam distribution system for steam flooding and steam distribution method thereof
  • Layered steam distribution system for steam flooding and steam distribution method thereof

Examples

Experimental program
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Effect test

Embodiment Construction

[0158] figure 1 It is a schematic diagram of the principle of downhole steam injection in the prior art.

[0159] figure 1 What is shown is the phenomenon of monolayer intrusion caused by steam overburden in the steam injection well. At present, the steam stimulation method has become the main technology for heavy oil development. However, most of the heavy oil reservoirs and blocks that have been put into steam huff and puff development in my country have entered the middle and late stages, that is, the steam huff and puff cycle is more than 5 weeks. Even if there are many oil reservoirs or blocks to drill infill wells and continue steam huff and puff production, the extended production period is limited. After multiple rounds of steam huff and puff, it is necessary to switch to the steam flooding production method in order to effectively improve the recovery rate. In recent years, the test results of more than ten steam flooding pilot projects developed through various t...

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PUM

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Abstract

The invention relates to a steam driving laminated gas distributing system, and relative method, which is used in dense oil steam driving well, wherein said invention comprises an oil well measuring unit, an oil well gas filling data processing unit, a laminated gas distributing unit, a display output unit and a laminated testing unit; the oil well measuring unit and the laminated testing unit are connected to the data processing unit, to transmit the gas filling parameters to the data processing unit; and the data processing unit will transmit the laminated gas distributed amount to the laminated gas distributing unit, to distribute gas laminated; and the data processing unit is connected to the display output unit to output oil well information, each filling parameter and filling result. The invention can distribute the gas flux laminated, based on the gas distributed amount and the area of gas distribute hole of each layer.

Description

Technical field: [0001] The invention belongs to a system and method used in steam flooding wells in the field of heavy oil thermal recovery, and in particular relates to a system and a method for stratified steam distribution for steam flooding wells. Background technique: [0002] Heavy oil is an important part of petroleum hydrocarbon energy, and has a huge potential several times higher than conventional crude oil resources. my country is rich in heavy oil resources, accounting for about 20% of petroleum resources. [0003] Heavy oil has high viscosity, high density, and large flow resistance during production. Not only is the displacement efficiency low, but the volume sweeping efficiency is also low, making it difficult to produce by conventional methods. [0004] In view of the characteristics of heavy oil, the heavy oil can be effectively exploited and the recovery factor can be improved by reducing the viscosity of heavy oil and reducing the flow resistance. The ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/24E21B47/00G06F17/00G05B15/02E21B49/00
CPCY02A10/40
Inventor 赵政超关仲石在虹李树全刘德铸陈红梅吴宁何传兴
Owner 石在虹
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