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Oil-water distribution tester and oil-water distribution test method

A distributed test and tester technology, which is applied in construction and other fields, can solve problems such as the difficulty in determining the water level of horizontal wells in oil fields, and achieve the effects of improving development effects, increasing single well oil production, and high measurement accuracy

Active Publication Date: 2014-01-01
PANJIN LIAOHE OILFIELD YULONG RUIDA PETROLEUM TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the difficulty in determining the water outlet level of horizontal wells in oil fields, the invention provides an oil-water distribution tester, which can be used to detect oil-water distribution, find leaks, measure liquid levels, etc.

Method used

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  • Oil-water distribution tester and oil-water distribution test method
  • Oil-water distribution tester and oil-water distribution test method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Before going into the well for testing, set the sampling mode of the host part of the instrument through the host computer software. Then connect the acoustic wave system 1 downwards and the battery 3 upwards respectively. After the overall connection of the instrument is completed, it is connected to the front end of the working string for lifting and lowering, and the tail cap end of the acoustic wave system is directed in line with the drilling direction. The instrument is tested and stored throughout the lifting process. The set sampling method is reasonably set according to well conditions and production stages. After the test is completed, take out the instrument, remove the host 2, communicate with the host computer online, and play back the data. The comprehensive interpretation software of the test can draw various logging curves, that is, the sound amplitude, variable density, oil-water distribution wave train curve, water Oil-water distribution curve of fla...

Embodiment 2

[0054] Such as Figure 4 As shown, this method can also be used in combination with temperature and pressure testers, and the effect of periodic injection and production of thermal recovery horizontal wells can be analyzed through the joint application of acoustic wave curves, water finding method with slight temperature difference, and temperature and pressure profile curves in the horizontal section.

[0055] The assembly steps of the oil-water distribution tester of the present invention are the same as those in Embodiment 1. Before being connected to the working pipe string, the end of the battery cylinder away from the main engine is passed through the screw thread and the temperature sensor 41, the pressure sensor 42, the micro-temperature difference control board 43 and the magnetic positioner. 24 components are connected and then lifted and unloaded. The instrument is tested and stored throughout the lifting process. The set sampling method is reasonably set according...

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Abstract

The invention provides an oil-water distribution tester and an oil-water distribution test method. The tester comprises a sonic system, a main machine consisting of an electronic circuit and a battery, wherein the sonic system, the main machine and the battery are in thread connection with one another and respectively provided with a centering guide so as to guarantee the concentricity of the tester and a shaft. The storage-type amplitude log is carried out by adopting a double-transmission and four-receiving way, the distribution of oil and water in a horizontal section is determined through the micro sound difference, the periodic injection-production effect of a thermal-recovery horizontal well can be analyzed collectively by utilizing the micro sound difference method, the micro-temperature-difference water finding method and a temperature pressure sectional curve of the horizontal section, when the cementing quality is detected, the distribution situation of the oil and water can be judged by detecting the tiny time difference through the difference of the spreading speed of sound wave in different media such as oil, formation water and injected water, the tiny difference of the medium temperature can be detected through a micro-temperature-difference instrument, the location and source of the water can be collectively determined by combining the tiny temperature difference and micro sound difference, so that the reliability of the logging data can be greatly improved, and the measurement precision of the instrument is higher.

Description

technical field [0001] The invention relates to a storage tester and a test method for oil-water distribution in a horizontal section in the exploitation of horizontal wells in oilfields, belonging to the category of instruments and meters. Background technique [0002] At present, the horizontal well exploitation technology of heavy oil and thin oil is developing rapidly at home and abroad, which has made a great contribution to the increase of my country's oil production. However, since the horizontal well was put into development, the problem of production logging in the horizontal well section has not been solved. After some wells are produced, the downhole water production is serious, because in the same formation, the seepage capacity of water is greater than that of oil. After water breakthrough in horizontal wells, if the measures for profile control and water shutoff are not taken in time, the water content of the oil well will remain constant. rise, forming water ...

Claims

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Application Information

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IPC IPC(8): E21B47/107
Inventor 马冬兰于雷于立君
Owner PANJIN LIAOHE OILFIELD YULONG RUIDA PETROLEUM TECH CO LTD
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