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Method for obtaining crude oil water content based on oil well indicator diagram

A technology of dynamometer diagram and water cut, which is applied in the direction of instrumentation, design optimization/simulation, calculation, etc., can solve the problem of not being able to timely and accurately grasp oil well production, difficulties in production management, increasing staff sampling, sending samples and monitoring water cut workload and Strength and other issues

Active Publication Date: 2020-07-31
PETROCHINA CO LTD
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually in various oil fields, the measurement of oil well water content needs to be obtained through the process of oil well head sampling, sample transportation and central laboratory testing. The monitoring results are often lagging behind, and the oil well production cannot be grasped in a timely and accurate manner.
At the same time, due to the large number of oil wells in each oil field and the scattered blocks, with the current monitoring methods, it is necessary to build a larger number of testing centers and invest more manpower, and it also greatly increases the number of staff sampling, sending samples and monitoring water content. The workload and intensity caused great difficulties to the normal production management on site

Method used

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  • Method for obtaining crude oil water content based on oil well indicator diagram
  • Method for obtaining crude oil water content based on oil well indicator diagram
  • Method for obtaining crude oil water content based on oil well indicator diagram

Examples

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Embodiment

[0155] according to figure 1 The shown method for obtaining the water content of crude oil based on the oil well dynamometer diagram includes the following steps

[0156] Step 1: Acquire data on the dynamometer diagram

[0157] Obtain the stroke, stroke data value and oil well static parameters in the dynamometer diagram in the oil well working condition system;

[0158] Step 2: Obtain the static load value of the suspended point

[0159] The static load at the suspension point is divided into the static load at the upper stroke and the static load at the lower stroke. According to the gravity of each meter of sucker rod in the liquid, the density of the mixed liquid, the density of the crude oil, the density of the water in the formation, and the content of the crude oil obtained in step 1. Water volume, pump depth, dynamic liquid level, plunger area, tubing pressure and casing pressure oil well static parameters, the static load value of the up-stroke suspension point and ...

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Abstract

The invention belongs to the technical field of oil field oil extraction, and particularly relates to a method for obtaining crude oil water content based on an oil well indicator diagram. The methodcomprises seven steps of obtaining data in an indicator diagram, obtaining a suspension point static load value, obtaining a suspension point inertia load value, obtaining a suspension point vibrationload value, obtaining a friction load value, calculating the oil well moisture content and monitoring the crude oil moisture content. An existing digital oil well working condition diagnosis technology is utilized, the water content of an oil well is calculated in real time through a water content formula, the water content of the oil well is conveniently calculated and monitored, the labor intensity of field workers and investment of manpower, material resources and financial resources of an oil field are effectively reduced, and fine monitoring of oil well yield fluctuation of the oil fieldis achieved.

Description

technical field [0001] The invention belongs to the technical field of oil production in oil fields, and in particular relates to a method for obtaining the water content of crude oil based on an oil well dynamometer diagram. Background technique [0002] At present, in the oil production wells of all oilfields in the world, the oil well production fluid contains a certain proportion of produced water. In order to monitor the produced water volume of oil wells in real time and accurately grasp the oil production volume of oil wells, each oil field must regularly measure the oil production volume of oil wells. The water content of the oil well produced fluid, because the water content of the liquid in the formation varies, so the monitoring of the water content of the oil well is an important work in the daily production of the oil field. Usually during normal production, the water cut of oil wells in oilfields needs to be measured every 10 days, and the monitoring period of ...

Claims

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Application Information

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IPC IPC(8): G06F30/28G06F113/08G06F119/14
Inventor 刘涛甘庆明陆梅刘静刘天宇姚洋
Owner PETROCHINA CO LTD
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