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Water-insoluble novel liquid tracer agent carrier

A water-insoluble, tracer technology, applied in the field of a liquid tracer carrier in the field of oilfield production logging technology, can solve the problems of inability to obtain qualified data, low logging data interpretation accuracy, etc., and achieve simple preparation and operation. , Wide field applicability, small density deviation effect

Active Publication Date: 2016-01-13
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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  • Water-insoluble novel liquid tracer agent carrier
  • Water-insoluble novel liquid tracer agent carrier
  • Water-insoluble novel liquid tracer agent 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 preparation environment temperature of 10°C, the volume ratio of white oil to tetrachlorethylene is 3.08:1, and the required density of 1.0g / ml tracer carrier is prepared 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 non-water-soluble liquid tracer carrier is smooth, the peak is obvious, and it is easy to explain.

[0036] 2. The ...

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Abstract

The invention relates to a water-insoluble novel liquid tracer agent carrier, and mainly solves the problem that logging information is low in interpretation precision and qualified information cannot be obtained because a water-soluble tracer agent diffuses. The carrier is characterized in that the carrier comprises the following compositions in percent by volume: 72.6%-78.4% of white oil, and 21.6%-27.4% of tetrachloroethylene. The water-insoluble novel liquid tracer agent carrier does not cause concentration diffusion, the measured curve is smooth, the peak position is obvious, flow interpretation is easily performed, and the tracer related logging information quality 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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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