Oil field construction technology by means of biological surfactant

A technology of biological surface and construction technology, applied in the fields of production fluids, wellbore/well components, earth-moving drilling and mining, etc., can solve the problems such as the lack of breakthrough progress

Inactive Publication Date: 2015-09-30
SUZHOU ZFA NEW ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, how to apply biosurfactants produced by microorganisms in oilfield construction technology has not yet achieved breakthroughs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] The specific implementation manner of the present invention will be further described in detail below in conjunction with specific examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0022] A kind of oil field construction technology of biosurfactant, comprises the steps:

[0023] (1) Propose the original downhole production pipe string, put down the well pipe string to the artificial well bottom to measure the depth of the artificial well bottom and the downhole condition, and then raise the well pipe string and run 21 / 2 smooth oil pipe to 1000m, and the tail pipe is the oil pipe Coupling, tighten the top wire at the wellhead, install the whole set of Christmas tree, and backwash the well for a week with large displacement;

[0024] (2) Apply a pressure of 20Mpa on the surface pipeline and wellhead, and it is qualified if it does not puncture or leak;

[0025] (3) Injecting...

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PUM

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Abstract

The invention relates to an oil field construction technology by means of a biological surfactant. The construction technology comprises the steps that on the condition that 20-22 Mpa pressure is applied to a ground well hole, after it is guaranteed that piecing and leaking do not occur, prepad fluid of which the concentration is 2.5-3.0 wt.% is injected into an oil well, and the usage amount is 5-7 cubic meters; then treating fluid of which the concentration is 2.0-2.2 wt.% is injected into the oil well, the usage amount is calculated by the formula Q=pi(r^2).h.phi, wherein Q is the total liquid amount, r represents the treating radius, h represents the effective thickness of the oil well, and phi represents the porosity; finally, waste water is adopted to replace the fluid, and the usage amount is 5-10 cubic meters; after the well is shut down for at least 72 h, a construction tubular column is put out, and well completion is achieved after an original production tubular column is put down. The biological surfactant used in the construction technology has the advantages that the extremely high capacity of releasing all solid surface hydrocarbon (oil) is achieved, secondary pollution cannot be caused to the stratum, disorder cannot be caused to a crude oil dehydration and sewage treatment system, and the oil production can be greatly improved; in addition, the construction technology is convenient to operate, safe and reliable, and suitable for wide-range usage.

Description

technical field [0001] The invention relates to an oil field microbial oil recovery technology, in particular to an oil field construction process of a biosurfactant. Background technique [0002] Since entering the 21st century, my country's national economy has achieved rapid development, but the demand for energy is also increasing day by day, which brings great pressure to the coordinated and stable development of the national economy. Petroleum is currently one of the most important varieties of energy resources in my country. Since my country became a net oil importer in 1993, my country's oil imports have increased year by year. In 2002, my country's crude oil imports exceeded 100 million tons, which remains high. International crude oil prices have brought enormous pressure to my country's economic development, so it is of great significance to develop enhanced oil recovery technology, improve extraction efficiency, and effectively utilize and save oil resources. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/22
Inventor 段浩
Owner SUZHOU ZFA NEW ENERGY TECH CO LTD
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