Downhole equipment while-drilling sample pool for logging while drilling

Abstract

The invention discloses a downhole equipment while-drilling sample pool for logging while drilling. The sample pool comprises a drilling fluid pool, a power turbine, a transmission turbine, a sample fluid pool and a Raman probe clamping device which are fixed in a drill pipe nipple and communicate with one another, wherein a drilling fluid inlet and a drilling fluid outlet are formed in the upperend and the lower end of the drilling fluid pool respectively, a sample liquid inlet and a sample liquid outlet are formed in the sample liquid pool, and the sample liquid inlet is formed in a drill column and communicates with a well wall; and a pump wheel is arranged in the drilling fluid pool and is in transmission connection with the turbine in the sample fluid pool through a driving shaft. Upward oil-containing drilling fluid enters a while-drilling detection pool, a laser Raman instrument can rapidly detect oil-containing hydrocarbon substances in the upward oil-containing drilling fluid, and due to the fact that the while-drilling detection pool comprises the pump wheel and a detection liquid turbine, the oil-containing drilling fluid in the while-drilling sample pool can be in a flowing state all the time by utilizing power generated by downward drilling fluid, so that the hydrocarbon substances in the upward oil-containing drilling fluid can be favorably and continuously monitored in real time. The while-drilling sample pool can detect oil and gas information of an downhole reservoir in real time.

Description

technical field [0001] The invention relates to the technical field of petroleum exploration, in particular to a downhole equipment logging-while-drilling sample pool while drilling. Background technique [0002] In today's petroleum exploration, measurement-while-drilling and logging-while-drilling technologies are widely used, and the data obtained through measurement-while-drilling and logging-while-drilling can more truly reflect the formation conditions near the drill bit. Hydrocarbon detection technology while drilling With the development of oil and gas exploration and development, this technology plays a pivotal role in it. With the help of related equipment and special detection tools while drilling, the geological information and construction conditions of underground reservoirs are collected, and then the collected downhole information is analyzed. Carry out processing, analysis, interpretation, evaluation, etc., and judge the oil and gas information of the downho...

AI Technical Summary

Problems solved by technology

Hydrocarbon detection technology while drilling With the development of oil and gas exploration and development, this technology plays a pivotal role in it. With the help of relevant equipment and special detection tools while drilling, the geological information and construction conditions of the downhole reservoir are collected, and the collected downhole information is analyzed. Carry out processing, analysis, interpretation, evaluation, etc., and judge the oil and gas information of the downhole formation. At present, the commonly used hydrocarbon logging method is to intrude the oil and gas in the downhole oil and gas layer, and then circulate to the ground with the drilling mud, through the work of the vacuum pump. , pump out the oil and gas in the degasser, and send it to the analyzer for testing through the gas pipeline. The process needs to be tested on the ground, and the sample to be tested is transported to the ground. This process cannot detect the oil and gas resources in the formation in real time. , the detection of the target formation is prone to large errors, and when the downhole detection signal cannot be transmitted to the ground in time, the drill bit may drill hundreds of meters away from the target formation, which is easy to cause losses, and the detection device on the ground occupies too much area. Large and increased investment in oilfield development

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