Automatic air gun for measuring oil well liquid level

A technology of liquid level measurement and air gun, which is applied in construction and other directions, can solve problems such as complex structure, sound pulse, self-adaptation, etc., and achieve the effect of solving complex structure, simple airway connection and good sealing performance
CN102168552BInactive Publication Date: 2013-07-31ZHEJIANG UNIV
6 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
ZHEJIANG UNIV
Publication Date
2013-07-31
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses an automatic air gun for measuring oil well liquid level. The automatic air gun for measuring oil well liquid level comprises a pilot deflation electromagnetic valve, a valve cover, a valve body, a main valve combination arranged in the valve body, an adjusting spring, an inflation / deflation electromagnetic valve and a wellhead connector, wherein one side of the valve bodyis provided with the valve cover; the pilot deflation electromagnetic valve is arranged on the valve cover; the other side of the valve body opposite to the pilot deflation electromagnetic valve is provided with the wellhead connector; the side of the valve body in the wellhead connector is provided with a microphone; the valve body is further provided with a pressure sensor, a pressure gauge, a micro-sound sensor, a manual pressure relief valve and the inflation / deflation electromagnetic valve. A main valve rod is designed to be a stepped type, so that gas in a well and gas in a gas storage chamber both can be used as the gas sources for pushing the valve rod to move, and the implosion and explosion manners are combined together; the two gas sources are connected with a control cavity bydamping holes for inflating the control cavity, so that gas resetting of the main valve rod can be realized, continuous transmission also can be realized when PMW (pulse width modulation) signals aresupplied to the pilot deflation electromagnetic valve; the shortage that the traditional implosion / explosion air gun has a complicated structure and is difficult to assemble and disassemble is solved.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to an automatic air gun for oil well liquid level measurement during oil well development. Background technique

[0002] As we all know, the determination of oil well liquid level is of great significance to oil well survey and measurement, and it can be an auxiliary parameter to determine oil well production, permeability and other parameters.

[0003] Echo ranging has been widely used in oil well measurement. By generating a sound pulse at the wellhead, the pulse propagates downhole through the annulus between the tubing and the casing. By measuring the time of coupling echo and liquid level echo, that is Acoustic velocity and liquid surface depth can be obtained. The traditional way of generating sound pulses is acoustic bombs. Due to many factors such as safety and environmental protection, it has become a trend to replace acoustic bombs with air guns.

[0004] There are two kinds of air sources for the sound pulse of the air...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More