A real-time online measurement method of drilling cuttings weight

A measurement method and technology of drilling cuttings, applied in the field of petroleum drilling, can solve the problems of discontinuous measurement and inability to measure, and achieve the effect of strong site adaptability, small changes and economical modification

Active Publication Date: 2021-09-17
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
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  • Application Information

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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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  • A real-time online measurement method of drilling cuttings weight

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Embodiment Construction

[0027] The invention discloses a real-time online measurement method for the weight of drilling cuttings, such as figure 1 As shown, it includes a processor, a screw conveyor 1, a longitudinal vibration sensor 6 for obtaining the vibration acceleration of the screw conveyor 1, a weight sensor 5 for obtaining the weight of the screw conveyor 1, and a sensor for obtaining the number of rotations of the screw shaft 2 The detector; wherein, the screw conveyor 1 is provided with a feed port 3 and a discharge port 4, and the feed port 3 and the discharge port 4 are respectively arranged at the upper and lower parts of the two ends of the screw shaft 2 for the feeding of cuttings. material and discharge; the screw conveyor 1 is respectively fixed on two bases (not shown in the figure) by two support columns 9, the number of weight sensors 5 is two, and the support columns 9 respectively arranged on the two bases Below; the weight of the screw conveyor 1 is the sum of two weight senso...

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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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01G17/00G01G17/02G01G23/01B65G33/00B65G33/24
CPCB65G33/00B65G33/24G01G17/00G01G17/02G01G23/01
Inventor 李雷张继川白璟谢意李枝林万夫磊明显森黄崇君姚建林范黎明贾利春刘殿琛彭陶均张林
Owner BC P INC CHINA NAT PETROLEUM CORP
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