Injection allocation technique for foaming agent

Abstract

The invention discloses an injection allocation technique for a foaming agent. According to the injection allocation technique for the foaming agent, a chemical liquor tank, a filter, a metering pump,a pulse damper, a nitrogen injection device, a foam generator and a gas-liquid pipeline are included, wherein the chemical liquor tank, the filter, the metering pump, the pulse damper, the nitrogen injection device and the foam generator are sequentially connected through the gas-liquid pipeline; a chemical discharging pump is connected to one side of the chemical liquor tank; and a mechanical pressure gauge, a high-pressure flow gauge and a conical regulation valve are further connected between the nitrogen injection device and the foam generator. By adoption of the injection allocation technique, the labor intensity of workers can be effectively relieved, the labor efficiency is improved, and potential safety hazards are reduced; and after the improved injection allocation technique comes into use, the injection allocation cost of the foaming agent is obviously reduced, the one-shift cost of vehicles is reduced, the cost is reduced by about 32%, and the injection allocation technique has remarkable economical benefits.

Description

technical field [0001] The present invention relates to oil exploitation technology, in particular to a kind of foaming agent dispensing technology. Background technique [0002] The heavy oil reservoir enters the later stage of multiple rounds of steam huff and puff, and the development effect becomes worse, which is manifested by low periodic oil production, low oil-gas ratio, and high comprehensive water cut. The low sweep efficiency of injected steam is the main reason for the above problems. Formation heterogeneity together leads to serious steam channeling, the injected steam flows from the high permeability zone, and the low permeability zone rich in remaining oil has not been effectively produced, which leads to the increase of water content in the produced fluid after multiple rounds of huffing and puffing, and the effect becomes poor . [0003] Nitrogen foam thermal flooding is a new method to increase oil recovery in heavy oil fields. By adding foam agent and ni...

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Problems solved by technology

[0004] In 2015, Huabin Transportation Company undertook the nitrogen injection work in the 9th area of ​​Binnan Oil Production Plant Management, and purchased the electric drive 900 nitrogen production and injection equipment, with an annual nitrogen injection volume of about 1.1 million standard cubic meters. At the same time, 90% of the nitrogen injection wells have obvious oil increase effect. In the existing process, the nitrogen injection and the foam agent injection of the profile control process are two relatively independent processes during construction, and two groups are required. Personnel and vehicle inspection and maintenance, which actually caused a great waste of personnel and increased the cost of using the vehicle

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