Method and device for collecting rheological parameters of drilling fluid, storage medium and processor

A technology of rheological parameters and drilling fluids, which is applied in the field of obtaining rheological parameters of drilling fluids, can solve problems such as inaccurate measurement of rheological parameters, and achieve the effect of solving inaccurate measurements

Active Publication Date: 2021-06-11
PETROCHINA CO LTD
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Problems solved by technology

[0004] The main purpose of this application is to provide a method, device, storage medium and processor for obtaining rheological parameters of drilling fluid, so as to solve the problem of inaccurate measurement of rheological parameters of drilling fluid containing coarse particles in the prior art

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  • Method and device for collecting rheological parameters of drilling fluid, storage medium and processor
  • Method and device for collecting rheological parameters of drilling fluid, storage medium and processor
  • Method and device for collecting rheological parameters of drilling fluid, storage medium and processor

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Embodiment

[0055] Drilling fluid includes plugging base slurry while drilling and plugging materials while drilling, wherein, plugging base slurry while drilling is composed of bentonite, potassium hydroxide, vinyl monomer multi-polymer, sulfonated lignite, sulfonated lignite resin, specific composition The fractions and their contents are shown in Table 1. After sieving, calcium carbonate particles of various sizes are mixed to form LPM-C, LPM-M and LPF-F three types of plugging materials while drilling with different particle sizes. The particle size distribution of LWD materials is shown in Table 2.

[0056] Table 1

[0057] component name function Content (wt.%) Bentonite Viscosifier & Fluid Loss Control Agent 4.0 KOH Inhibitors & pH Regulators 0.1 PAC-141 Coating agent 0.3 SMC Fluid loss control agent 1.0 SPNH Fluid loss control agent 3.0 SMP-2 Fluid loss control agent 2.0 XC flow regulator 0.2 KCl Shale in...

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Abstract

The invention provides a method and a device for collecting rheological parameters of drilling fluid, a storage medium and a processor. The method comprises the following steps: controlling an inter-ring gap of a coaxial cylinder rotational viscometer to be adjusted from a preset standard inter-ring gap to a preset inter-ring gap; in the process of adjusting the inter-ring gap of the coaxial cylinder rotational viscometer, collecting a measurement result of rheological measurement of the drilling fluid by the coaxial cylinder rotational viscometer; and analyzing the rotating speed and the corresponding viscometer reading by using the rheological model to obtain the rheological parameters of the drilling fluid. According to the method, by adjusting the inter-ring gap of the coaxial cylinder rotational viscometer, coarse particles of the drilling fluid can pass through the inter-ring gap of the coaxial cylinder rotational viscometer in the measurement process, and the measured rotating speed and the corresponding viscometer reading are analyzed by using a rheological model obtained by training of multiple groups of training data; therefore, accurate rheological parameters of the drilling fluid can be obtained.

Description

technical field [0001] The present application relates to the technical field of testing rheological parameters of drilling fluid, in particular, to a method, device, storage medium and processor for obtaining rheological parameters of drilling fluid. Background technique [0002] Plugging while drilling is to add a certain amount of plugging material into the drilling fluid circulation system to seal the lost channels such as pores or cracks in the leaky layer while drilling. It has become a common method of leak prevention and plugging in the drilling process. In the current calculation process of annular hydraulics, the influence of plugging materials on the rheological properties of annular drilling fluid is ignored. In fact, the addition of plugging materials while drilling will inevitably affect the rheological properties of the drilling fluid, thereby affecting the effective pressure at the bottom of the hole, and the existing coaxial cylinder rotary viscometer is use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G16C60/00G01N11/00
CPCG16C60/00G01N11/00
Inventor 刘可成徐生江路宗羽徐新纽戎克生徐小龙蒲晓林王贵
Owner PETROCHINA CO LTD
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