A real-time online measurement method of drilling cuttings weight

Abstract

The invention discloses a real-time on-line measurement method for the weight of drilling cuttings, comprising the following steps: 1: setting a measurement time period, and obtaining the number of rotations of a screw shaft within the measurement time period; 2: dividing the number of rotations into multiple Rotation cycle; 3: Obtain the initial weight of the screw conveyor at the beginning of each rotation cycle and the real-time weight at the end of each rotation cycle, as well as the vibration acceleration at the beginning of each rotation cycle and the vibration acceleration at the end of the time; for the initial weight and real-time weight Carry out calibration to obtain the initial calibration weight and real-time calibration weight, and then calculate the actual delivery weight of cuttings in each rotation cycle; 4: Sum the actual delivery weight of cuttings in each rotation cycle to obtain the rock cuttings within the measurement period. total weight of crumbs. The present invention requires little modification to the existing equipment, and can realize real-time on-line accurate measurement of cuttings returned from drilling within the measurement time period according to the preset measurement time period.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to a method for real-time on-line measurement of the weight of drilling cuttings. Background technique [0002] With the continuous advancement of shale gas exploration and development, extended-reach wells and horizontal wells, especially three-dimensional cluster horizontal wells, have increased significantly in the Sichuan-Chongqing area. Among them, 90% of the horizontal wells deployed in shale gas are three-dimensional horizontal wells, and the longer and longer. In the drilling of horizontal wells, cuttings bed accumulation is easily formed at the lower hole wall of the highly inclined section and the horizontal well section, resulting in a substantial increase in friction and torque, and may also cause complicated situations such as pipe sticking and pump holding, which seriously affect the use of drilling tools Life and drilling safety, resulting in increased pro...

AI Technical Summary

Problems solved by technology

Although this technology can detect cuttings data in real time, it requires custom-made equipment. After the cuttings are loaded to the set level, the cuttings must be automatically turned over and poured out. During this period, cuttings cannot enter, otherwise they cannot be measured, and there is a problem with measurement. continuous technical problems

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