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A Novel Water-Insoluble Liquid Tracer Carrier

A water-insoluble, tracer technology, which is applied in the field of oil field production logging technology as a liquid tracer carrier, can solve the problems of inability to obtain qualified data and low accuracy of logging data interpretation, and achieve simple preparation and operation , Wide field applicability, stable storage effect

Active Publication Date: 2018-02-02
PETROCHINA CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to overcome the problems in the background technology that the accuracy of logging data interpretation is low and qualified data cannot be obtained due to the diffusion of water-soluble tracers, and provides a new type of non-water-soluble liquid tracer carrier

Method used

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  • A Novel Water-Insoluble Liquid Tracer Carrier
  • A Novel Water-Insoluble Liquid Tracer Carrier
  • A Novel Water-Insoluble Liquid Tracer Carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Under the condition of the preparation environment temperature of 20°C, the volume ratio of white oil to tetrachlorethylene is 3.31:1, and the required density of 1.0g / ml tracer carrier is prepared when the downhole temperature is 15°C.

Embodiment 2

[0030] Under the condition of preparation environment temperature of 20°C, the volume ratio of white oil to tetrachlorethylene is 3.40:1, and the required density of 1.0g / ml tracer carrier is prepared when the downhole temperature is 10°C.

Embodiment 3

[0032] Under the condition of the preparation environment temperature of 10°C, the volume ratio of white oil to tetrachlorethylene is 3.08:1, and the required density of the tracer carrier is 1.0g / ml when the downhole temperature is 30°C.

[0033] Performance evaluation of this water-insoluble novel liquid tracer carrier:

[0034] 1. The curves of polymer flooding and ASP flooding have been significantly improved for large flow wells

[0035] image 3 , Figure 4 It is the 60m measured by the water-soluble liquid tracer carrier and the new-type water-insoluble liquid tracer carrier prepared as in Example 1 respectively in polymer flooding. 3 / d flow curve. The curve measured by the water-soluble liquid tracer carrier is not smooth, overlapping phenomenon occurs, it is difficult to explain, and the interpretation accuracy is low; the curve measured by the new type of non-water-soluble liquid tracer carrier is smooth, the peak is obvious, and it is easy to explain.

[0036] ...

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Abstract

The invention relates to a new type of water-insoluble liquid tracer carrier. It mainly solves the problems of low accuracy of logging data interpretation and failure to obtain qualified data due to the diffusion of water-soluble tracers. It is characterized in that the components and proportions are as follows by volume percentage: the volume content of white oil is 72.6%-78.4%, and the volume content of tetrachlorethylene is 21.6%-27.4%. The new water-insoluble liquid tracer carrier has no concentration diffusion, the measured curve is smooth, the peak position is obvious, the flow rate is easy to interpret, and the quality of tracer-related logging data can be improved.

Description

technical field [0001] The invention relates to a liquid tracer carrier in the technical field of oil field production logging, in particular to a new water-insoluble liquid tracer carrier. Background technique [0002] Injection profile logging technology is the main technology used to understand the injection situation of each layer in the injection well during the oilfield development process. The tracer correlation flow injection profile logging technology is one of the injection profile logging technologies widely used at present. It is suitable for water flooding, polymer flooding and ASP flooding, and is suitable for general injection wells and layered injection wells. The basic principle is that a radioactive tracer is first released into the well during well logging, and the flow velocity of the fluid is determined by measuring the flow velocity of the tracer, and then the injection profile is interpreted. The tracer is composed of isotope and carrier liquid. The c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/06C08K5/02
Inventor 李军张巍蔡兵唐海涛张先华夏慧玲高飞张海明陈庆新黄泽艳
Owner PETROCHINA CO LTD