Oil production well productivity tracking and evaluating method

An evaluation method and technology for oil production wells, applied in chemical instruments and methods, production fluids, earthwork drilling and production, etc., can solve problems such as poor effect, low efficiency, high risk, etc., and achieve good compatibility, high monitoring sensitivity, and easy identification Effect

Active Publication Date: 2014-02-05
DAQING YONGCHEN PETROLEUM TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After this kind of well measures, which layer will flow out? How much fluid came out? It is difficult to give an answer by conventional methods such as well logging and oil testing. Even if it is implemented, it is time-consuming, laborious, low in efficiency, poor in effect and high in risk

Method used

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  • Oil production well productivity tracking and evaluating method
  • Oil production well productivity tracking and evaluating method
  • Oil production well productivity tracking and evaluating method

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Embodiment Construction

[0046] The present invention will be further described below in conjunction with specific embodiment:

[0047] 1) During the fracturing process of the oil production well, add the indicator on the sand mixing vehicle when filling the pre-fluid and the sand-carrying fluid, and add the indicator according to the dosage table of the corresponding interval (see Table 1). In the fracturing sequence, five types of indicators, YTJ-3, YTJ-1, YTJ-2, YTJ-4 and YTJ-5, were added to the fracturing fluid of the first to fifth layers (stages), each 227L , 227L, 205L, 227L and 227L solutions, the whole liquid indicator addition process is uniform and stable (see Table 2).

[0048] Table 1 Amount of indicator dosing for staged fracturing in Well Yingping 1

[0049]

[0050] Table 2 Dosing liquid indicator on-site construction record form

[0051]

[0052]

[0053] 2) Tracking and monitoring of liquid indicators:

[0054] (1) Sampling method: during the flowback period of fracturin...

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Abstract

The invention relates to an oil production well productivity tracking and evaluating method. The method comprises the following steps of 1) during a fracture construction process, adding liquid indicator agent into a blending truck when preparing prepad fluid and carrying fluid; 2) during the fracture fluid recovery process, performing continuous tracking, monitoring, sampling and measuring; 3) during a pumping overlayer production process, performing sampling at the mouth of a well or a measuring station, obtaining the amount of tracked pumped fluid during normal operation, wherein sampling includes different requirements on different wells; 4) respectively measuring the concentration of liquid indicator agent and the illumination intensity of every preprocessed sample through analyzing instruments to calculate out contribution rate, recovery rate, recovery amount and the like. According to the oil production well productivity tracking and evaluating method, by means of classification, analysis, processing and study of the liquid indicator agent, relevant information such as production liquid component status, productivity (contribution rate), fracture effects and the like.

Description

Technical field: [0001] The invention relates to the field of oil production in oil fields, in particular to a method for tracking and evaluating the productivity of an oil production well. Background technique: [0002] With the continuous deepening of oilfield development, the workload of oil and water well stimulation measures has increased and the difficulty has also become more and more difficult. The benefits of measures have attracted more and more attention, especially unconventional fracturing and layered fracturing with large investment The effects and benefits of wells are more concerned by oilfield development workers; the current layered (stage) fracturing has become very common, whether it is in the fracturing fluid system, or in the proppant system, fracturing process measures, fracturing tubes, etc. Columns and other aspects have formed a complete set of scientific process system, and its workload is increasing year by year, but the corresponding monitoring m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/11E21B43/26C09K11/06
Inventor 张春龙张百双刘涛宋平平
Owner DAQING YONGCHEN PETROLEUM TECH
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