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Method for monitoring working fluid level through pumping unit suspension point static loads and determining working fluid level

A dynamic liquid level and static load technology, applied in earthwork drilling, special data processing applications, wellbore/well components, etc., can solve the problems of difficult operation and high cost of dynamic liquid level monitoring, and achieve the effect of improving production efficiency

Pending Publication Date: 2020-11-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the current problems of high cost and difficult operation of dynamic liquid level monitoring during well shutdown, the present invention provides a method for monitoring the dynamic liquid level and determining the dynamic liquid level through the static load of the suspension point of the pumping unit. The present invention achieves real-time, Continuous acquisition of dynamic liquid level and coordination of supply and drainage relationship improve the production efficiency of oil wells

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  • Method for monitoring working fluid level through pumping unit suspension point static loads and determining working fluid level
  • Method for monitoring working fluid level through pumping unit suspension point static loads and determining working fluid level
  • Method for monitoring working fluid level through pumping unit suspension point static loads and determining working fluid level

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Embodiment 1

[0045] In order to overcome the problems of high cost and difficult operation of the current dynamic liquid level monitoring during well shutdown, the present invention provides a method such as Figure 1-3 As shown, the dynamic liquid level is monitored by the static load of the pumping unit and the dynamic liquid level is determined. The present invention achieves the purpose of real-time and continuous acquisition of the dynamic liquid level, coordination of supply and discharge relationships, and improvement of oil well production efficiency.

[0046] The method for monitoring the dynamic liquid level and the method for determining the dynamic liquid level by the static load of the suspended point of the pumping unit, the specific steps are as follows:

[0047] Step 1, measure the sucker rod load of the pumping unit through the load sensor installed on the wellhead hanger, and collect the load and time curve;

[0048] Step 2, install a pressure gauge at the wellhead to mea...

Embodiment 2

[0057] Based on Embodiment 1, in this embodiment, preferably, in the fifth step, the result issuing unit is set in each oil production plant.

[0058] Preferably, in the fifth step, the result publishing unit is composed of a database server, an application server and a Web server, receives the results of the recovery degree of the dynamic liquid level and the basic data of the oil well uploaded from the data processing unit, and uses the oil production plant as a unit to All data is stored and web page information is released. Through the load sensor installed on the wellhead hanger, the sucker rod load of the pumping unit is measured, and the load and time curve is collected.

[0059] The specific process of the method for monitoring the dynamic liquid level by using the static load of the oil pumping unit suspension point in the present invention is as follows:

[0060] A pressure gauge is installed at the wellhead to measure the real-time casing pressure value of the oil ...

Embodiment 3

[0062] On the basis of Embodiment 1 or 2, this embodiment provides a method for determining the dynamic liquid level by the static load of the pumping unit suspension point. Then the mathematical model of the dynamic liquid level of the oil well is established to obtain the subsidence pressure, and then the subsidence pressure is determined through the casing annulus. The submerged pressure obtained twice is equal, and finally the dynamic liquid level of the oil well is obtained.

[0063] Establish a mathematical model of oil well dynamic liquid level: take the submerged pressure as a node, establish a balance model in which the fixed valve is opened in the upper stroke section of the well stopped and acts on the plunger. The submersion pressure corresponding to the submersion degree of the pump is compared with the submerged pressure of the pump suction and discharge during the upstroke, and then compared with the submerged pressure obtained from the pressure distribution of t...

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Abstract

The invention provides a method for monitoring a working fluid level through pumping unit suspension point static loads and determining the working fluid level. The method for monitoring the working fluid level through pumping unit suspension point static loads comprises the specific steps of 1, measuring rod pumped well pumping rod loads and collecting a load and time curve through a load sensorinstalled on a wellhead beam hanger; 2, installing a pressure meter at the wellhead to measure an oil well real-time casing pressure value; 3, transmitting the measured casting pressure and load signals to a wellhead collector, wherein the oil well data is uploaded to a well site main RTU through the wellhead collector, the collected data is transmitted to a main station center receiving antenna in a wave mode through a well group antenna for data receiving. The method can obtains the working fluid level and coordinated supply-drainage relation continuously in real time, and the oil well production efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of oil production in oilfield development, in particular to a dynamic liquid level monitoring and a dynamic liquid level determination method by means of a static load on a suspension point of a pumping unit. Background technique [0002] In the process of opening a well, there is a system and method for real-time calculation of the dynamic liquid level of an oil well by using the collected polished rod dynamometer diagram, which can realize the continuous monitoring of the dynamic liquid level and change the working method of manually going to the field to perform the dynamic liquid level test of the mechanical production well. , to solve the problems of long on-site operation cycle, high labor intensity, and low representativeness of instantaneous test values. The method has been authorized an invention patent, patent number ZL2012103425733. However, it cannot solve the monitoring problem of the dynamic l...

Claims

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Application Information

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IPC IPC(8): E21B47/047E21B49/00G06F30/20
CPCE21B49/00G06F30/20
Inventor 辛宏甘庆明刘汉斌赵春索媛媛雷宇樊松郭靖梁毅韩二涛
Owner PETROCHINA CO LTD
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