Unlock instant, AI-driven research and patent intelligence for your innovation.

Measurement method capable of effectively discriminating underground slurry state

A measurement method and mud technology, applied in surveying, earthwork drilling, wellbore/well components, etc., can solve problems such as large errors and waste of energy, and achieve the effects of good directional drilling, extended working time, and high precision

Inactive Publication Date: 2010-06-30
SHANGHAI GASOLINEEUM & CHEM EQUIP +1
View PDF0 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this method is: since the static mud cannot transmit the coded signal to the ground data acquisition device, the information received by the ground equipment is the data when the mud is in motion, which leads to a large error
It also wastes energy because the sensors are constantly sending data

Method used

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
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0012] A kind of measuring method of effectively discriminating downhole mud state provided by the invention, its steps are:

[0013] Step 1. Drill the interconnected sensor unit and data processing module together with the measurement-while-drilling equipment into the ground immediately behind the drill bit;

[0014] Step 2. The azimuth sensor measures the azimuth, well inclination, high-side tool face, gravity and four parameters, and then transmits them to the data processing module;

[0015] Step 3. The data processing module samples the azimuth, well inclination, high side tool face, gravity and four parameters every 5 to 10 seconds, and judges whether the mud is in motion at the current moment; if one of the following 8 conditions is met A piece of mud in motion:

[0016] Condition 1. When the absolute value of the difference between the measured well inclination value and the previous measured well inclination value is greater than 0.2 degrees, it is considered that th...

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

PUM

No PUM Login to View More

Abstract

The invention provides a measurement method capable of effectively discriminating underground slurry state. The method comprises the following steps that: a sensor unit and a data processing module which are connected mutually, and a measurement device while drilling are drilled into ground, following a drilling bit, azimuth, well deflection, high side tool face and gravity are measured and transmitted to the data processing module which judges if the state is mobile, if the state is mobile, the data is not transmitted and vise versa. The invention has the advantages that the precision of the well deflection, the direction and the tool face of the sensor can be ensured, the battery power consumption is saved and the work time is prolonged.

Description

technical field [0001] The invention relates to a measuring method for effectively distinguishing downhole mud state, which is used for collecting measurement values ​​such as well deviation, azimuth, tool face, etc., and belongs to the technical field of downhole mud state measuring methods. Background technique [0002] When the data transmission of measurement while drilling (MWD) requires wireless transmission, mud can be used as the transmission carrier, and the mud pressure value can be used as the coded signal for transmission. The original approach was to collect sensor data directly and send it to ground equipment. The disadvantage of this approach is that since the static mud cannot transmit coded signals to the ground data acquisition device, the information received by the ground equipment is the data when the mud is in motion, which leads to large errors. It also wastes energy because the sensors are constantly sending data. Contents of the invention [0003...

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

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/18E21B47/005
Inventor 毕东杰陆永钢
Owner SHANGHAI GASOLINEEUM & CHEM EQUIP